That's kind of a tall order to ask what Hungary's significance throughout history, but here's a brief outline.
The Hungarians are a Finno-Ugric people related distantly to Finns, Estonians, Kurs, and some smaller groups in modern Russia. This means that Hungarian is not an Indo-European language, and is therefore quite different from most of its neighbors' languages. Their original homeland some 3000 years ago was in the Ural mountains but they migrated over several centuries southward and westward until around the 9th century A.D. when they broke free from an old alliance with the powerful Turkic Khazar empire. A combined Pecheneg-Bulgar attack in 896 forced the Magyars (as the Hungarians call themselves) westward, and they seized the southern part of a Slavic empire in old Roman Pannonia, in the Carpathian Basin. This is where present-day Hungary is located.
This region was ideal for Hungary because of its wide grasslands (great for horses, and the Hungarians were like all Steppe peoples an equestrian people) surrounded by mountains (easily protected). The Carpathian Basin had been the home for several Steppe empires since the collapse of the western half of Rome; Goths, Gepids, Dacians, Huns, Avars, Bulgars, etc. The Magyars were just the next in line. They marauded around Europe, spreading destruction everywhere for decades after 896 - as far west as Paris - before being defeated by a rejuvenated German empire under Otto I in 955 at Lechsfeld/Augsburg. After Augsburg the Magyars faced a decision; either keep up the old Steppe ways but face a Christian invasion just like the one that destroyed their predecessors, the Avars, or convert to Christianity now and settle down and join Europe. The Magyars were blessed with intelligent leadership at the time and they decided Option B was the way to go.
Prince Géza accepted Christianity - sort of - and had his son Vajk baptized and re-named "István" (Stephen). Stephen fully Christianized the country and for his efforts was awarded a crown by Pope Sylvestor II in A.D. 1001, and since then Hungary has been a Christian country and very much apart of European history. (See my article here for some points about Stephen and the crown.)
Better move this along a bit; don't want to be too verbose....
To understand the Mongol invasions and their impact on Hungarian history, check out this article I wrote on it.
Hungary's first ruling dynasty were called the A'rpáds but they died out (as most dynasties eventually do) in 1301, and Hungary chose the then-powerful Anjou family for its next dynasty. The Anjous were from Burgundy (in modern France) and were among the most powerful rulig families in Europe at the time. The Anjous introduced a great era for Hungary and for Europe, and transformed Hungary from a minor kingdom to a major Central European power. They coordinated economic and security efforts between the Hungarian, Bohemian (Czech) and Polish kingdoms, eventually ruled all three countries through elections and launched related dymasties in all three. The Anjous coordinated their diplomacy in the region through the fortress at the Danube Bend in northern Hungary called "Visegrád", which is why in 1990 when fresh from overthrowing their communist governments Poland, Hungary and Czechoslovakia met at Visegrád and thereafter coordinated their efforts to get into the EU, calling themselves the "Visegrád Triangle". (In Poland the Anjous were half of Poland's greatest dynasty, the Jagiellonians, along with the Lithuanian Mindaugas line.) The last Anjou king for Hungary, Zsigmond (Sigismund), was among the greatest Hungarian kings but also the worst. When in 1396 the Ottoman Turks were attacking Byzantium, Zsigmond organized a crusade against the Ottomans and led the Christian European army to Nicopolis but disagreements in the Christian ranks about strategy led to disaster, and the Christian army was anniliated by the Turks. Zsigmond survived and went on to greater things - he was elected Holy Roman Emperor in 1410 - but he left Hungary very exposed to Ottoman attack.
Hungary's butt was saved by an extremely able military commander, János (John) Hunyadi, the product of a mixed Hungarian-Romanian parents in Transylvania. (Ioan will hit me if I don't mention that he is known to Romanians as Iancu de Hunedoara.
)
Hunyadi led several successful wars against the Ottomans, most famously saving Belgrade (which was a Hungarian city at that point, Nándorfehérvár) in 1456. For this act - which saved Hungary and possibly all of Central Europe from the Ottomans - Pope Calixtus III declared that all church bells in Europe should ring at noon forever to celebrate Hunyadi's victory. That's where the church bell ringing at noon tradition comes from. Hunyadi, while an able military commander, was less adept at politics. He was declared a regent to an absent king but managed to p*ss off most Hungarian nobles, which led at one point to his oldest son being executed.
Hunyadi's younger son, Máttyás (Matthew, or as he is known by his Latin name "Matthias") took the rthone after he died, which was a bit of a problem because technically Hunyadi was never king so Matthias' claim to the throne was a bit weak. Still, Matthias came to be medieval Hungary's greatest and most effective king - and also its last. Matthias Corvinus ("Matthew the Raven", because of the raven on the family coat of arms) defeated the Turks several times, successfully interefered in the election of the Holy Roman Emperor, expanded Hungary's borders along the Dalmatian Coast (modern Croatia) and even captured Vienna (making it his capital) along with most of eastern Austria, Silesia (modern western Poland) and Moravia (eastern Czech Republic). Matthias also built one of the largest libraries in Renaissance Europe, establishing universities and encouraging studies and science.
Like many powerful rulers, when Matthias died in 1490 (likely by poisoning), the state had become so dependent on him that in his absence it fell apart. Post-Matthias Hungary deteriorated under weak rulers until in 1526 it met doom at the Battle of Mohács, when the Ottoman Turks finally managed to conquer Hungary. The Turks conquered most of Hungary except for a thin strip in the north in what is today Slovakia. This part of northern Hungary was taken over by the Habsburg family, and for 150 years the Habsburgs and Turks fought one another alng their border in Hungary. Hungarian Transylvania became independent under the Turks and even fought as a Protestant state in the Thirty Years War, playing a major role until its leader's death in 1629. The Turks encouraged the Protestant churches (because the Catholics had an organized church with headquarters in Rome to organize anti-Turkish resistance), so still today Hungary is about evenly divided between Calvinist Protestants (called locally Református or Reformist) and Roman Catholics.
The Turkish occupation of Hungary came to an end between 1683-1690 when they unsuccessfully attempted to conquer Vienna, failed, and inspired a Christian alliance that nearly drove the Ottomans out of the Balkans. (Check out my article with this link to better understand these wars.) Hungary was "liberated" from the Turks, but now belonged to the Habsburgs (who had ruled northern Hungary since 1526). The Hungarians revolted against the Habsburgs in 1703-11 but unsuccessfully, and Hungary remained in the Habsburg empire.
In 1848 all Europe exploded into revolution, and Hungary was in there with the best of them. Hungary organized a national government and army and managed to drive the Habsburgs out of the country. There were problems with the country's minorities but repeatedly the Hungarians fended off Austrian invasions, even after all the other revolutions failed. In 1849 however the Austrians asked for outside help from the Russians, and a combined Austrian-Russian invasion finally destroyed the new Hungarian state. The Austrians severely repressed the Hungarian rebels and banned just about any expression of Hungarian nationalism - including wearing Hungarian national clothes in public - throughout the 1850s. (A colleague once wrote a paper comparing the Austrians' suppression of Hungarian nationalism with the English suppression of Scottish nationalism; very interesting.)
Luck was on the Hungarians' side however. In 1866 the Austrians had a show-down with their rivals in Germany, the Prussians, and lost spectacularly. The Prussians effectively pushed the Habsburgs out of Germany, and the Austrians needed to establish their power base outside Germany. For this they turned to the second largest group in their empire, the Hungarians, and they created in 1867 the dual-monarchy called Austria-Hungary. The military, foreign office and national economic matters were handled by Vienna but all else was controlled by the Austrian and Hungarian governments. The Hungarians remember this as a second golden age, and many of their cultural classics came from this time. Unfortunately however while at first the Hungarians created good minority laws, when they discovered through the first modern censuses told the Hungarians that their population in Hungary was shrinking and their minorities' populations (Slovaks, Serbs, Romanians, Croats) were growing they panicked and began trying to force their minorities to "Hungarianize" or "Magyarize". This of course did not sit well with these minority peoples and they developed a great hostility towards the Hungarians.
World War I of course did not go well at all for Austria-Hungary. In 1878 Austria-Hungary was given Bosnia-Herzegovina as a protectorate (from the Ottoman Empire) and in 1908 the Empire annexed Bosnia outright. Serbian nationalists wanted to seize Bosnia for Serbia and it was they who organized the assassination of the Habsburg Archduke Franz Ferdinand on 28. June 1914 in Sarajevo. At first Austria wanted to immediately attack Serbia but the Hungarians dragged their feet because they feared bringing more Serbs into the country. This is why the crisis after the assassination dragged on for a month in July 1914, giving other countries time to respond and choose sides in the crisis, setting the stage for a world war. The Serbs of course repulsed the first Austro-Hungarian attacks in 1914, but were defeated in 1915 with German help. The Austro-Hungarian Army also had success against the Italians but the Russian Brusilov Offensive in 1916 destroyed the Austro-Hungarian Army. When defeat came in 1918, the empire collapsed and both Austria and Hungary declared their independence. Oddly enough though Hungary took most of the blame for the war instead of Austria.
For an article on a story from post-World War I Hungary, check out another article here.
Part II comin'
The Hungarians are a Finno-Ugric people related distantly to Finns, Estonians, Kurs, and some smaller groups in modern Russia. This means that Hungarian is not an Indo-European language, and is therefore quite different from most of its neighbors' languages. Their original homeland some 3000 years ago was in the Ural mountains but they migrated over several centuries southward and westward until around the 9th century A.D. when they broke free from an old alliance with the powerful Turkic Khazar empire. A combined Pecheneg-Bulgar attack in 896 forced the Magyars (as the Hungarians call themselves) westward, and they seized the southern part of a Slavic empire in old Roman Pannonia, in the Carpathian Basin. This is where present-day Hungary is located.
This region was ideal for Hungary because of its wide grasslands (great for horses, and the Hungarians were like all Steppe peoples an equestrian people) surrounded by mountains (easily protected). The Carpathian Basin had been the home for several Steppe empires since the collapse of the western half of Rome; Goths, Gepids, Dacians, Huns, Avars, Bulgars, etc. The Magyars were just the next in line. They marauded around Europe, spreading destruction everywhere for decades after 896 - as far west as Paris - before being defeated by a rejuvenated German empire under Otto I in 955 at Lechsfeld/Augsburg. After Augsburg the Magyars faced a decision; either keep up the old Steppe ways but face a Christian invasion just like the one that destroyed their predecessors, the Avars, or convert to Christianity now and settle down and join Europe. The Magyars were blessed with intelligent leadership at the time and they decided Option B was the way to go.
Prince Géza accepted Christianity - sort of - and had his son Vajk baptized and re-named "István" (Stephen). Stephen fully Christianized the country and for his efforts was awarded a crown by Pope Sylvestor II in A.D. 1001, and since then Hungary has been a Christian country and very much apart of European history. (See my article here for some points about Stephen and the crown.)
Better move this along a bit; don't want to be too verbose....
To understand the Mongol invasions and their impact on Hungarian history, check out this article I wrote on it.
Hungary's first ruling dynasty were called the A'rpáds but they died out (as most dynasties eventually do) in 1301, and Hungary chose the then-powerful Anjou family for its next dynasty. The Anjous were from Burgundy (in modern France) and were among the most powerful rulig families in Europe at the time. The Anjous introduced a great era for Hungary and for Europe, and transformed Hungary from a minor kingdom to a major Central European power. They coordinated economic and security efforts between the Hungarian, Bohemian (Czech) and Polish kingdoms, eventually ruled all three countries through elections and launched related dymasties in all three. The Anjous coordinated their diplomacy in the region through the fortress at the Danube Bend in northern Hungary called "Visegrád", which is why in 1990 when fresh from overthrowing their communist governments Poland, Hungary and Czechoslovakia met at Visegrád and thereafter coordinated their efforts to get into the EU, calling themselves the "Visegrád Triangle". (In Poland the Anjous were half of Poland's greatest dynasty, the Jagiellonians, along with the Lithuanian Mindaugas line.) The last Anjou king for Hungary, Zsigmond (Sigismund), was among the greatest Hungarian kings but also the worst. When in 1396 the Ottoman Turks were attacking Byzantium, Zsigmond organized a crusade against the Ottomans and led the Christian European army to Nicopolis but disagreements in the Christian ranks about strategy led to disaster, and the Christian army was anniliated by the Turks. Zsigmond survived and went on to greater things - he was elected Holy Roman Emperor in 1410 - but he left Hungary very exposed to Ottoman attack.
Hungary's butt was saved by an extremely able military commander, János (John) Hunyadi, the product of a mixed Hungarian-Romanian parents in Transylvania. (Ioan will hit me if I don't mention that he is known to Romanians as Iancu de Hunedoara.

Hunyadi led several successful wars against the Ottomans, most famously saving Belgrade (which was a Hungarian city at that point, Nándorfehérvár) in 1456. For this act - which saved Hungary and possibly all of Central Europe from the Ottomans - Pope Calixtus III declared that all church bells in Europe should ring at noon forever to celebrate Hunyadi's victory. That's where the church bell ringing at noon tradition comes from. Hunyadi, while an able military commander, was less adept at politics. He was declared a regent to an absent king but managed to p*ss off most Hungarian nobles, which led at one point to his oldest son being executed.
Hunyadi's younger son, Máttyás (Matthew, or as he is known by his Latin name "Matthias") took the rthone after he died, which was a bit of a problem because technically Hunyadi was never king so Matthias' claim to the throne was a bit weak. Still, Matthias came to be medieval Hungary's greatest and most effective king - and also its last. Matthias Corvinus ("Matthew the Raven", because of the raven on the family coat of arms) defeated the Turks several times, successfully interefered in the election of the Holy Roman Emperor, expanded Hungary's borders along the Dalmatian Coast (modern Croatia) and even captured Vienna (making it his capital) along with most of eastern Austria, Silesia (modern western Poland) and Moravia (eastern Czech Republic). Matthias also built one of the largest libraries in Renaissance Europe, establishing universities and encouraging studies and science.
Like many powerful rulers, when Matthias died in 1490 (likely by poisoning), the state had become so dependent on him that in his absence it fell apart. Post-Matthias Hungary deteriorated under weak rulers until in 1526 it met doom at the Battle of Mohács, when the Ottoman Turks finally managed to conquer Hungary. The Turks conquered most of Hungary except for a thin strip in the north in what is today Slovakia. This part of northern Hungary was taken over by the Habsburg family, and for 150 years the Habsburgs and Turks fought one another alng their border in Hungary. Hungarian Transylvania became independent under the Turks and even fought as a Protestant state in the Thirty Years War, playing a major role until its leader's death in 1629. The Turks encouraged the Protestant churches (because the Catholics had an organized church with headquarters in Rome to organize anti-Turkish resistance), so still today Hungary is about evenly divided between Calvinist Protestants (called locally Református or Reformist) and Roman Catholics.
The Turkish occupation of Hungary came to an end between 1683-1690 when they unsuccessfully attempted to conquer Vienna, failed, and inspired a Christian alliance that nearly drove the Ottomans out of the Balkans. (Check out my article with this link to better understand these wars.) Hungary was "liberated" from the Turks, but now belonged to the Habsburgs (who had ruled northern Hungary since 1526). The Hungarians revolted against the Habsburgs in 1703-11 but unsuccessfully, and Hungary remained in the Habsburg empire.
In 1848 all Europe exploded into revolution, and Hungary was in there with the best of them. Hungary organized a national government and army and managed to drive the Habsburgs out of the country. There were problems with the country's minorities but repeatedly the Hungarians fended off Austrian invasions, even after all the other revolutions failed. In 1849 however the Austrians asked for outside help from the Russians, and a combined Austrian-Russian invasion finally destroyed the new Hungarian state. The Austrians severely repressed the Hungarian rebels and banned just about any expression of Hungarian nationalism - including wearing Hungarian national clothes in public - throughout the 1850s. (A colleague once wrote a paper comparing the Austrians' suppression of Hungarian nationalism with the English suppression of Scottish nationalism; very interesting.)
Luck was on the Hungarians' side however. In 1866 the Austrians had a show-down with their rivals in Germany, the Prussians, and lost spectacularly. The Prussians effectively pushed the Habsburgs out of Germany, and the Austrians needed to establish their power base outside Germany. For this they turned to the second largest group in their empire, the Hungarians, and they created in 1867 the dual-monarchy called Austria-Hungary. The military, foreign office and national economic matters were handled by Vienna but all else was controlled by the Austrian and Hungarian governments. The Hungarians remember this as a second golden age, and many of their cultural classics came from this time. Unfortunately however while at first the Hungarians created good minority laws, when they discovered through the first modern censuses told the Hungarians that their population in Hungary was shrinking and their minorities' populations (Slovaks, Serbs, Romanians, Croats) were growing they panicked and began trying to force their minorities to "Hungarianize" or "Magyarize". This of course did not sit well with these minority peoples and they developed a great hostility towards the Hungarians.
World War I of course did not go well at all for Austria-Hungary. In 1878 Austria-Hungary was given Bosnia-Herzegovina as a protectorate (from the Ottoman Empire) and in 1908 the Empire annexed Bosnia outright. Serbian nationalists wanted to seize Bosnia for Serbia and it was they who organized the assassination of the Habsburg Archduke Franz Ferdinand on 28. June 1914 in Sarajevo. At first Austria wanted to immediately attack Serbia but the Hungarians dragged their feet because they feared bringing more Serbs into the country. This is why the crisis after the assassination dragged on for a month in July 1914, giving other countries time to respond and choose sides in the crisis, setting the stage for a world war. The Serbs of course repulsed the first Austro-Hungarian attacks in 1914, but were defeated in 1915 with German help. The Austro-Hungarian Army also had success against the Italians but the Russian Brusilov Offensive in 1916 destroyed the Austro-Hungarian Army. When defeat came in 1918, the empire collapsed and both Austria and Hungary declared their independence. Oddly enough though Hungary took most of the blame for the war instead of Austria.
For an article on a story from post-World War I Hungary, check out another article here.
Part II comin'