Sales tax would affect lower class people the most.
They did this so when the Mongols took over China, the Chinese could not gain high power and over throw the mongols.
The first printing press. Before 1440 only a few thousand handwritten texts existed across Europe.
The Peloponnesian War weakened the Greek city-states and it divided them. This gave Phillip 11 of Macedon the opportunity to move in and conquer them in their weakened, non-united condition and they were never to get their original strength back again. The Peloponnesian war was very debilitating to the Greek city-states.
