Here’s what my old textbook has to say on economic growth…
Preconditions of Economic Growth [They miss transport…]
“The most basic precondition for economic growth is an appropriate incentive system. Three institutions are crucial to the creation of incentives:
1. Market
2. Property Rights
3. Monetary Exchange
Markets enable buyers and sellers to get information and to do business with each other, and market prices sent signals to buyers and sellers that create incentives to increase or decrease the quantities demanded and supplied. Markets enable people to specialise and trade and to save and invest…"
So to elaborate, in a small town with only one blacksmith the only pricing information generally available to your average pre-industrial citizen, was rumour, perhaps some first hand information gleaned from work done in another town or nearby village, and perhaps some work done some time ago in a city some distance away (never-mind the city closest to that one, might as well be on the moon in most cases).
So the price is not just historic (which is what most people base price decisions of, note the propensity of people to say “this was not what it used to cost!”

, people are happy to ignore factors which explain the rise in price [comments on gas prices and market speculators will get you my ire

].. Assume for a moment that one is aware of a potential iron shortage somewhere distant, heard from a trader, lo and behold the smart blacksmith will raise his prices to deal with potential iron shortages in the future, of course these iron shortages might be totally un-factual or might have no bearing of the supplies that the blacksmith uses. So prices in the Pre-Modern world were historic by nature, and did not respond much at all to the underlying factors of supply and demand (great abundance was followed by great shortages, in just about everything, since the market was “dumb” to price signals). Famine in one region could be matched against bounty in another region but starvation could still occur because of the terrible price information, a merchant will not make a trip to an area on the off chance that the crop has failed, it is also instructive to note that in many periods of history price in a legal sense was set historically, the Code of Hammurabi set ceilings for prices of essential food goods and provided punishments for hoarding and profiteering [some iterations of the code that is]. So prices are not responsive, and do not reflect the true dictates of supply and demand which is not impossible to overcome, well organized, safe states have a natural advantage over states which are poorly organized, and unsafe (by organized I include such things as a simple customs regime, relatively few internal customs divisions, a good transport system, a reasonably competent bureaucracy and other considerations which might ****** information in-flows and out-flows and their agents generally merchants and other petty traders). If this can achieved then there are a few other critical considerations, critical mass in transactions is needed, the more transactions the less error and the closer the price convergence to the “true” price, one can easily test this, imagine for a moment that there are but 3 people handling transactions, they each only sell but a few times a week and your stay in the area is only for a while, say two to three days, the maximum amount of transactions you can expect to see in a given period is only a few if any, you therefore have little knowledge of the true price (to put it another way the width of possible bargaining is a fair indication of poor price signals, merchants should know there costs much better than you know the “true” price). Add 50 people with only a few sales a week and you will get a much better knowledge of price, and with each additional person all things being held equal you end up with competition which will drive down price (another fun bit of trivia, in a great many Medieval States setting to low prices was a crime “unfair competition” suits were fairly common, heck they happened in Roman Law as well). You need a market of some description for economic growth,
Property rights are social arrangements that govern the ownership, use, and disposal of factors of production and goods and services. They include the right to physical property (land, buildings and capital equipment), to financial property (claims by one person against another) and to intellectual property (such as inventions). Clearly established and enforced government give people an assurance that a capricious government will not confiscate their income or savings.
Growth does not work well when the state is in a particularly confiscatory mood, and pre-modern states tended to like doing this, be it through the form of monopolies, through all out theft, to rigging legal apparatus (often institutionally), through to the seizing of inventions. All of these acts weaken the incentive to work, and well the incentives to do anything.
If you are a merchant or nobleman and whenever the state needs cash it forces you to lend to it at a low rate of interest with little intent to repay you will have suffered a common practice in the pre-industrial world (all out theft was a more direct option), so what the natural fall back? Commonly one would hide, divest or deliberately make less money that one could make, oddly it would appear that this was a common practice (wills are an interesting document… and it has been remarked that wills seldom correlate well with the taxes paid to the state).
Property rights also confer another key advantage, people have a vested interest in improving that which they owe, people have little incentive to improve on that which others own, rental properties are the exemplar of this, I know of no rental property which has ever been improved upon by renters (aside from non-fiduciary contributions).
Certainly finance could not function with the absence of property rights, if one were free to appeal to the Courts or the King for remission of onerous debt, then there exists the possible (and let us never forget that law is precedent based, even in non common law systems) then all lenders on aggregate will increase the rate of interest, and refrain from lending. A single court case, a loss of confidence or predatory behaviour could potentially destabilize the financial markets, since money is quite free-flowing and is not easily tied to a single nation. Capital flees on wings, people flee on foot.
Monetary Exchange facilitative transactions of all kinds, including the orderly transfer of private property from one person to another. Property rights and monetary exchange create incentives for people to specialise and trade, to save and invest, and to discover new technologies.
It’s a no brainer that currency is superior to barter, if one has a mere 16 goods there are a total of 256 different combinations with which to trade with, and even assuming you can find the good you want and figure out the rough price in your trade good the other party might not accept your particular good on offer.
Transport
A reliable transport system is also needed, for without infrastructure the other factors cannot be of use, in a particularly bad area, it is entirely plausible to have an internally balkanized nation. With different markets in different regions all not connecting to each other. It need not be said that this is not conducive to maintaining a strong centralised state.
[I lost my chain of though about midway through this, so the entries got shorter, and yet again rather general, but I think I need to keep it that way to be useful to others, textbooks tend to be horrible pieces of work generally...]
I like to think of these as “growth” frameworks, economic growth is severely stymied by a lack of these factors. It can happen, and I’ll grant it has (but there is a big difference between catch-up growth and long term stable growth from a mature economy) but it will be tepid in comparison to a state which has all of these factors.
Any increase in technology which increases production or efficiency will increase population. Advances in technology, lead to an investment in new capital, which makes labour more productive, more and more business starts up. This greater demand increases the real wage (money wage/purchases of goods, a nifty means of removing inflationary effects) and spurs employment. This increase the subsistence real wage rate (the rate at which life is maintained, can be higher than the “subsistence” rate as we view it), when the wage rate rises, population increases… and the growth is spread amongst more mouths! Malthus always sets in and given your 25 year turns (and the ability of populations to double in a generation, which to be honest is not much more than 25 years) Malthus kicks in.