[anovikov]

It was also 92 years before Ben Franklin's kite experiment.

Middle Ages arguably, were done with the Black Death of 1346, when a third of agricultural labor was wiped out making land rents much cheaper and in many cases, nil. It ended feudalism because just controlling land was no longer enough to make money - and peasants got plenty of disposable income that they used to spend on rents - enabling consumption of industrial goods - and capitalism began; by the time peasants multiplied again some 150 years later to reverse the situation, America was discovered and those extra people started to emigrate there to make use of those free lands (and also, well, exploit and sometimes genocide locals... but that is another story), so feudalism never returned. By 1660, it was a distant memory.