The 1780s have often been thought of as quiet times; indeed, when compared to the 1790s - and far moreso to 1770s or 1800s - they often seemed peaceful, boring and inconsequential. But these traits, especially the latter, are scarcly appliable to any time; and indeed, much less to the 1780s than to many, many other decades.
According to a more accurate description, if the 1790s were years of the initial moves on the chessboard of the world, while the 1800s were the culminative years of the decisive moves, then the 1780s were a time when the chessboard was being set up, the figures placed and the very first moves made. In the 1770s, the world was shaken and realigned; the changes inflicted to the geopolitical order were completed by the rise of a brand new generation of leaders in the 1780s. This new generation only begun to act then and in the 1790s; and in the 1800s, these new leaders would clash, first in diplomacy and intrigues, and then, through the analogous "young guard" of the European militaries, on the battlefields of a new general European war...
But back then, though the issues that would cause it were already in existance, and the inevitability of the eventual war obvious, it was still far away, while the previous war had already passed away; now was a time between the wars, a time of recovery... and preparation.
Still, it was a comparatively quiet time. It would be best to go over its events in the same manner as we went over the state of the world in the year 1780, beginning with North America.
In North America, colonization and development of the existing colonies went on. In the northwestern extreme, Russian commercial presence grew; a permanent trade outpost was established in 1786, in the Three Saints Bay; several more followed, spurred on by the new Emperor's unhealthy expansionism. To the south, the Spanish continued their far-reaching administrative reforms, creating the Vice-Royalty of Louisiana as colonists settled along the Mississippi. French control over Quebec was consolidated, as was the British control over Prince Rupert's Land; some border clashes insued. Meanwhile, despite some remaining local separatism, the remaining British Maritimes and New England were incorporated into the Commonwealth directly and subdivided into boroughs; the same was eventually repeated in New York, but considerable protest was encountered in Pennsylvania, where separatism only grew, despite the fear of Franco-Spanish encroachment.
That encroachment indeed continued; as Spanish colonists arrived in Louisiana and French - in Quebec, the past problems of underpopulation soon begun threatening to turn into ones of overpopulation; though this did not occur yet, already fur traders, hunters and the more adventerous of the colonists ventured east (or south), into the Ohio Valley; and from the east, British colonists poured in as well. Allying with the Amerinds as usual, the French hindered British expansion in the Great Lakes region; soon a genuine border war commenced, although curiously not spilling out either to the Georgo-British border or to Europe, or even to the seas (well, apart from a few lesser clashes there). Franco-Amerind forces won a key battle at Pittsburgh, and several naval skirmishes in the Lake Erie. After an international crisis, the British had to accept western borders similar to those of the "1763 Proclamation Line", opening vast areas for Franco-Spanish trade and eventually settlement; in Birmingham, hopes were entertained that this frustration and the clarity of French menace would scare Pennsylvania into submission, but this plan backfired as the Pennsylvanians were outraged at this perceived betrayal (although technically they were forced back to the Proclamation Line in any case, militarily), and nearly seceded. It was still kept in line for now, as all the other British North American colonies were also incorporated, thus isolating Pennsylvania politically in case of a rebellion; however, Pennsylvania continued to drift away from Birmingham, both because of the former's separatism, but also because it already became a hotbed of political radicalism, as opposed to the demcoratic conservatism that reigned supreme in the Commonwealth.
Georgia lingered on, despite continued revolts, chiefly in Virginia which was in a state of permanent rebellion, with partisans roaming through the countryside.
Despite occasional slave revolts and naval incidents, all was quiet in the Carribean. In South America, a series of neo-Incan revolts were put down; Spanish relations with the Amerinds were worsened even further, but the Creoles, who also suffered during the revolt, became rather more loyal. Hispanno-Portuguese border clashes, especially in the region of Banda Oriental, resumed after a decade of peace.
In Britain itself, fast-paced industrialization and economic recovery continued; also, ofcourse, Britain rebuilt its fleet - both the commercial one and the military one. Domestically, the Radicals took power under Charles James Fox for 1782-1784, expanding suffrage and controversially abolishing the House of Lords; the latter measure passed through just barely, but after it the Moderates, still led by Edmund Burke, came to power again; not rescinding any previous reforms, they introduced few new ones, apart from some economical liberalization and the integration of New England and Ireland into the British political system. The latter resulted in an Irish revolt, which however was defeated quite quickly. In foreign policies, ties were renewed with Portugal, increasingly fearful of Spanish encroachment, and reaffirmed with Prussia. Mutual Anglo-Prussian intervention defeated a new Patriot revolution in Holland, but then forced the stadholder to introduce some (fairly limited) reforms and sell several colonies (Britain bought Padang - and most of the western Sumatran coast along with it - and the island of Sumba, Prussia bought the Dutch trade posts and factories on the Gold Coast). A tariff war with France occured (this increased the Irish grievances, as the tariff war was caused by the growth of physiocratic France's agricultural exports, particularily to the starving Ireland). As far as colonial and commercial expansion went, as already implied by the Dutch purchases, the British, instead of trying to recover their positions in the mainland India, continued to secure their positions in the East Indies; they also established an increasing trading presence in both Canton and Macao.
Meanwhile, France's domestic problems were resolved after a series of crises and riots, sometimes detiriorating into open armed clashes between the populace and the Privileged; the latter, though better-armed, were outnumbered and defeated in the streets, and finally, cowed by the chasm of revolution opening up before him, Louis XVI once more gave in, this time - to Honore-Gabriel Riqueti, comte de Mirabeau, at the same time a supporter of monarchy and of reform, and, how ever scandalous and shunned (until now, ofcourse), a nobleman, who now became Prime Minister of France; under his lead, the parlement was reformed along British lines, yet the king still retained great power and influence; gradual land reform was introduced, and privileges of the aristocracy and the clergy were generally curtailed, although politely and with compensation. In economy, physiocratic reforms continued, buoyed by the rise of a free farmer class. Meanwhile, France's in the greater world attention was also turned chiefly to extra-European affairs; ties with Egypt were increased, and advisors helped Murad Bey modernize and hold on to power; similar assistance went to the young Tippu Sultan (heir to Hydar Ali). Settlement of New France, expanded to the other side of the Great Lakes, continued; new trade outposts in West Africa, Madagascar (which was by then a patchwork of small French puppet states) and southeastern India; explorers travelled through the Pacific Ocean and in the Terra Australis.
Spain continued its resurgence; administrative reforms and defeat of Amerind rebels strenghthened Spanish positions in the American colonies, the fleet was reformed and took part - along with a large Italian coalition, notably including Tuscany and Naples (and, ofcourse, Malta) - in a series of expeditions against the Barbary Coast pirates, defeating the pirate fleet in several battles and capturing the city of Tlemcen; the Spanish not only retained it by the eventual peace treaty, but also forced the North African rulers to withdraw all support for the Berber pirates; Carlos III's popularity in Spain and in the rest of Europe grew monumentally, and Mediterranean trade begun to pick up again, and along with it - Catalonia's economy. Triumphant in both main directions of its foreign policies, Spain nevertheless remained a loyal French ally, though occasionally tempted by British and Austrian entreaties.
Portugal continued to stagnate quietly, under the increasingly-senile Queen Maria I, who nevertheless was persuaded to reconcile with Britain in order to save her realm from Spanish annexation in the face of the eastern neighbour's resurgence.
As already mentioned, the United Provinces of Holland were still in crisis, the Oranje stadholder's power resting merely on the bayonets of the Anglo-Prussian troops and the cowardice of the defeated burghers, strenghthened by the oft-decried "Orange Terror". Dutch naval and commercial power was never weaker; the colonial empire was, as also already mentioned, being sold away, and Dutch influence eveywhere collapsed; Sudafrika, under the corrupt governor of Kaapstad, Cornelis Jacob van de Graaff, attained undeclared, unacknowledged independence; the rest of Dutch East Indies was little better, especially the VOC was paralyzed by bankruptcy and clashes with the stadholder over the selling of its outposts. The Dutch colonial empire was rotten.
The Danish Prince Regent Frederik, and his Prime Minister Andreas Peter Bernstorff, took power after a bloodless coup d'etat against the insane King Kristian VII's reactionary advisors; although this meant that the Reaction was over, Denmark-Norway both maintained - somewhat warily after Pavel I's ascension - its Russophilic orientation in foreign policy and didn't introduce much radical reform at home; nevertheless, mild liberalization took place, as did French-inspired agricultural reforms (Physiocratism was still all the rage in European academic circles, despite some skepticism in Britain, led by an ex-Physiocrat named Adam Smith). Also, a limited rapproachment with Britain took place, even though in the conditions of detiriorating Anglo-Russian relations this was a risky move for a country like Denmark.
Most changes in Sweden were chiefly quantitive ones; the economic boom continued, though it begun to run out of steam, and some more enlightened domestic reforms occured. Gustav III did experiment with parliamentary government again, but was forced to dismiss the uncooperative Diet after a year with surprisingly little furor. Even as the Swedish colonial empire was rising far overseas, however, the Swedish politicans continued to daydream about Baltic supremacy and revanche against the Russians. Thus as Russo-Prussian relations detiriorated, Sweden signed several trade agreements with Prussia, combined with a secret mutual protection protocol...
Not much apparently changed in the internal interrelations of the sovereigns of the Holy Roman Empire since 1780. Belgium remained diverse and disparate, its attempts to annex Liege and/or the Cologne Electorate - acts that would have brought the state together geographically - blocked by threats of French intervention. Prussia, under the ageing Friedrich II, continued to undergo various reforms, most notably a renewed effort at universal education, some administrative reforms and less succesful social experiments (that nonetheless allowed the final abolition of serfdom, boosting the manpower pool at the price of instability and weakening of the vital Junker class). Austria's ruler Josef II was an even more ambitious reformer; the Austrian military was reorganized along the Prussian lines, serfdom was abolished (causing a Hungarian revolt that was put down with Prussian help), wide-reaching administrative and educational reforms (including a partial secularization) took place, and bureaucratization was enacted. Other states achieved little of note, apart from some liberal and enlightened reforms done by Brunswick-Hannover.
Despite this deviancy in internal development, and the retention of Austro-Prussian dualism, the Russian threat remained potent enough to safeguard the Kaunitzian system and the Imperial solidarity; with the death of Maria Theresa, the Austrian and Prussian governments grew ever more vociferous in their cries for a Partition of Poland; yet both Catherine II and Pavel I rejected this in no uncertain terms - the former quite politely, the latter - harshly and rudely. In 1788 this nearly led to a war, but the sudden intervention of France on the side of "a sovereign and undivided" - and Russian-guarded - Poland gave the Germans a pause; a war with France AND Russia was a nightmare scenario for both Josef II and Friedrich II.
Josefian reforms continued in the Habsburg-ruled Lombardy and Tuscany - even more sweeping and far-reaching than the reforms in Austria, at first anyway, until some of the Tuscanian nobility launched an active revolt; though it was defeated before achieving anything, Josef decided to be more careful from now on. In Savoy, Vittorio Amadeo III's inept rule (and that of his equally-inept minsters) continued, the country entering stagnation and its once-great army detiriorating. Genoa underwent a slight resurgence of its fortunes by investing in France's prosperity; however, the Genoese plans to take over the French economy had backfired, and instead the city-state itself was overran with French merchants and exports, increasingly turning into a French puppet state. Modena meanwhile became an Austrian puppet due to dynastic marriage and Austrian assistance against republican rebels - the Austro-Modenan alliance increased the tensions in Italy, as it threatened the Bourbon Spanish possessions of Parma and Guastalla. As the various Italian nations took sides, Venice sided with neither the Bourbons nor the Habsburgs - officially it retained neutrality, but it clearly favoured Russia and Byzantium due to trade ties with them. Already, some secret plans for a "hypothetic" partition of Austria were made. The Papal States continued their pro-French allegience after a failed attempt to reconcile with Austria (the relations were complicated by the Josefian secularization); meanwhile, curiously enough, the Kingdom of Naples (more concerned for its geopolitical than dynastic situation due to the Austrophile John Acton's influence), though cooperating closely with Spain in its North African campaigns (briefly capturing Tunis), had improved relations with Austria, introducing some reforms (chiefly military and educational) that were clearly Josefian in inspiration, spoiling Neapolitan relations with the Pope.
Stanislaw II in Poland used the Russian instability after Catherine's death and complications in Russia's relations with Prussia and Austria to try and break free from Russian rule; he had temporary success, introducing a new constitution and negotiating some initial treaties with France; however, the Polish bid for an alliance with France had backfired badly, alienating the Austro-Prussians and forcing Pavel I's hand; also, the liberal, centralizing reforms were highly unpopular amongst the nobility, who launched a pro-Russian rebellion. Stanislaw II tried to fight back against the Russian invasion of 1785, but despite brave resistance of his levies they were inevitably overran by the Russians. Encouraged by the initial defeats of their monarch, the noble pans launched a coup d'etat led by Stanislaw Szcezny Potocki; the coup succeeded, reforms were rolled back,.peasants and patriots beaten into submission with Russian help and alliance with France cancelled - in exchange, the Russians agreed to guarantee Poland's sovereignity in its present borders (precipitating the 1788 crisis). With Potocki as Regent (King Stanislaw II having been exiled to Saxony), Poland's aristocracy became stronger than ever before - as did Poland's ties with Russia.
In the Byzantine Empire, these were the last years of the Regency, as young Constantine - Konstantinos X Romanus - grew up and already moved to Constantinople. There, Alexandros Ypsilantis no doubt did at some point entertain some plans of breaking away and taking the crown for himself, but after the disastrous failure of his 1784 invasion of Egypt the Regent decided to sit quietly at home and concentrate on domestic reform, having to hide behind the Russian bayonets again when several republican and Turkish revolts broke out in the wake of the debacle. The Byzantine Empire thus continued to be at best a junior partner of the Russian Empire, although by now it wasn't really as fragile as it seemed, with a fairly competent bureaucratic network.
The last four years of Catherine the Great's reign in Russia saw continued reforms and colonization of Siberia and New Russia; there were also a few mostly-inconsequential revolts by the native peoples of Siberia. Catherine the Great had intended to pass on the throne to her second grandson Nikolai (the first one having already taken the Byzantine throne, though only in name for now), but in 1784 she suddenly died, probably poisoned by her increasingly-bitter son, Pavel I. The eccentric and militaristic new ruler immediately won the hatred of the enlightened nobility due to his persistant and outrageous efforts to make them actually do something. Disgusted, Pavel soon begun stripping the old nobility of many of its privileges, and at the same time encouraging the elevation of the military aristocracy, which became the fundament for his reign. After defeating several conspiracies, Pavel backed that fundament up by creating a secret police system; at the same time, major administrative overhauls took place, and self-sustaining "military settlements" were set up to help supply Pavel's military build-up (which, at the price of straining the Russian economy and especially agriculture, turned Russia's army into the largest in Europe; this new army, despite later downsizing when the harm to the economy became apparent, didn't show itself too well on the battlefields of Lithuania and Kazakhstan, but its numbers more than made up for any deficiency in quality). Meanwhile, a belated surge of mercantilism and overseas expansion took place, with tariff wars with Prussia and the creation of Russian settlements in Alaska and Sakhalin. The Russian forces, as already implied, had invaded and conquered much of Kazakhstan; Erekle II of Georgia had abdicated in Pavel I's favour as well, further strenghthening the Russians in the Caucasian region (which resulted in a fairly indecisive war with the Zand Persians).
To sum up, Europe's diplomatic situation was quite uncertain, but generally historians tend to outline three key power blocks - the Franco-Spanish alliance (later termed the "Bourbon Powers", or "Western Powers"), the Austro-Prussian alliance (the "Central Powers") and the Russo-Polono-Byzantine alliance (the "Eastern Powers") - some also mention an Anglo-Portuguese "naval league". The other powers, including Britain, either tried to retain neutrality and mobility, either joined one of the three power blocs (sometimes defecting from one to another). This situation was highly-explosive, and already then von Kaunitz had grimly and correctly predicted that "some damn foolish thing in Poland" will put Europe aflame; however, perhaps miracilously, peace was retained for several decades - though it would be more realistic to attribute this to the distractive domestic and/or colonial preoccupations of the great powers.
As was already mentioned, North Africa came under several European attacks in this decade; although at some point in the 1780s almost each of the key cities of North Africa's coast (sans most of Morocco) was held by one European power or another, in the end the Europeans either proved to have insufficient manpower and logistics to hold what they had captured, either had gravely underestimated the power of their enemies. While the Barbary Coast pirates were easily reined in by the Spanish-led raids which took Tlemcen as a trophy, in Egypt the Byzantines were defeated by Murad Bey's French-reformed army in the Battle at Kafr ad Dawwar (just to the southeast from Alexandria). This victory had both ensured Egypt's survival and safety (and allowed it to create a navy of its own) and vindicated Murad Bey's reforming, Francophilic policies, both of which continued. Murad Bey's ambitious counterattack into Anatolia was beaten back with Russian and Venetian help, forcing him to change his plans and instead concentrate on expanding his realms south. In that he was quite succesful, taking over Funj and Yemen and thus establishing control over all the Red Sea ports.
Elsewhere in Africa, a myriad tribal conflicts went unnoticed, as were Segu's and Oyo's military expansions in West Africa and as was Ethiopia's never-ending civil war. As usual, history mostly remembered the deeds of Europeans and those of the Africans who dared interact with them. The most notable development in European Africa in this decade was probably the collapse of Dutch influence, with the sale of Holland's West African colonies with Prussia and the de facto independence of Cornelis Jacob van der Graaff's Sudafrika. Though corrupt, van der Graaff was definitely a fairly competent leader, defeating both the Xhosa invaders and the British expeditionary force, and yet not daring claim official independence to avoid provoking a more serious British or French effort. Fortunately for him, both Britain and France were more busy elsewhere; the British established more colonies in West Africa, most notably Freeland (OTL Sierra Leone) where the freed slaves were settled, and the French defeated various Merina uprisings, gradually taking over Madagascar in a more direct fashion; at the same time, French expansion in the Senegal region took place, chiefly along the river, and more direct trade ties with Segu were established. The Prussians, the Bremeners and the Swedes also established or bought some outposts in southern West Africa, and the Portuguese had also begun to pay more attention to Angola and Mozambique, the former continuing its evolution into a convict colony for the Braganza Dynasty's ever more numerous political enemies (and other criminals).
After the death of Karim Khan Zand in 1782, Persia fell into civil war between the various Zand heirs and other pretenders; although Lotf 'Ali Khan Zand would eventually defeat both the Russian invaders in the north and the Qajar rebels in Persia itself, taking more-or-less secure power in Shiraz in 1787, Zand Persia would by then be so ravaged by this civil war that it would never recover from its effects which devastated the economy and ruined its stability; Lotf 'Ali Khan did defeat the separatist rebels in all of the empire's corners, but though a military genius he wasn't as good at domestic issues and certainly not up to the Herculean task of saving Zand Persia from the doom that he had merely delayed with his actions.
Oman's colonial empire continued to gradually fall apart due to decentralization, coming under French and Portuguese commercial influence.
In India, as both the Afghan and the Maratha empires disintegrated due to feudal and tribal strife, smaller, centralized states with European-trained European-style militaries, such as Maha Singh's Khalistan, rose to greater prominence. Maha Singh, having united the various Sikh tribes into a loose coalition, drove out the Afghans and the Muslim warlords from the key parts of Punjab, creating the kingdom of Khalistan and forging close ties with the Portuguese and the British. Shah Alam II and his minister Najaf Khan presided over a minor Mughal renaissance, retaking Delhi and the surrounding regions, with clandestine French assistance. The Maratha Confederacy fell into disrepair and civil war; in this state it was defeated by the Rajput princes in the north and the energetic new Mysorean ruler the Tippu Sultan in the south; thus contained to northern Deccan, the Maratha Confederacy had failed to rally and regroup, instead breaking up into several states in all but in name. In the wake of Maratha's collapse, a Portuguese-sponsored Sultanate of Gujarat was set up in Gujarat, new Rajput states rose between Rajputana and Narmada, and the British reconquered Bihar; on the southern side, Mysore became larger and stronger than ever before, with the conquest of Travancore and the Nizamate of Hyderabad, plus some Marathan borderlands; however, this empire was increasingly overstretched and difficult to manage. New Swedish and Danish trade outposts appeared in central India and in Ceylon as Dutch authority there collapsed.
In Myanmar and Siam, two visionary new leaders rose to power in 1782 - Bodawpaya in the former, Phraphutthayotfa Chulalok (Rama I) in the latter. Bodawpaya, a religious fanatic who believed himself to be Arimittya (the Buddha destined to conquer the world), introduced far-reaching religious reforms and prohibitions, sponsored vast building projects and conquered Arakan; his campaign against Siam was a failure, however. The far more sane Phraphutthayotfa Chulalok, founder of the Chakkri dynasty, had introduced major reforms in all spheres - patronizing literature, sponsoring a codification of religious and other laws and a general strenghthening of the Buddhist monkhood, reforming the administrative system and modernizing the military with some British assistance; the Siamese army had resisted Chinese incursions, conquered Cambodjia, imposed a vassal ruler in Vientiane and as already mentioned checked Bodawpaya's world conquest plans (for surely had the Siamese failed to do so, Bodawpaya would have become unstoppable and in 1800 the Burmese soldiers would've washed their boots, or whatever they have for footwear, in the Thames; those of you who disagree with this assesment are too weak-willed and caught up in their preconceptions to face teh truth).
In Vietnam, the Tay Sons rebellion and the associated civil wars were finally ended by French intervention, which put Nguyen Phuc Anh, the nephew of the last legitimate claimant (who had by now died), on throne as Emperor Gia Long, an unwilling French puppet that had to allow greater and greater French military and commercial presence in Vietnam under the pretext of defeating the continued peasant revolts in the countryside and defending Vietnam from the Chinese (who invaded in 1787). The British, after failing to prop up the Tay Sons in time, have stepped up their efforts to ally with China; sadly, these efforts bore no fruit yet, and neither did the various British-instigated conspiracies against the French.
To counter the French presence in Vietnam, the British had themselves increased their presence elsewhere in Indochina, allying with Siam and conquering such mainland Malayan states that remained independent until now; also, a presence was established in western Borneo and in western Sumatra after the purchase of Padang. Sweden's influence in Java increased, and trade outposts in southern Sumatra were established.
Qing China was now entering a darker time, with yet-disconnected peasant revolts, growing corruption, and Qianlong's misplaced blind trust in the particularily-corrupt minister Heshen; also, in foreign policies, the Chinese influence in Indochina collapsed due to rise of strong local rulers and a rapid increase in European presence. The economy was in decline, despite the profitable trade with the European nations.
Lastly, Japan under chief minister Matsudaira Sadanobu underwent some moderate Confucian reforms, fostering agriculture and combatting the famines, but crippling the commerce and poisoning relations with Russia after Pavel I's uninvited diplomats were chopped into pieces upon arrival; the Tsar was only barely dissuaded from launching an all-out invasion of Japan by the fact that it was completely unfeasible, Siberian infrastructure being what it is. Still, Japan's opening was now but a matter of time.