[RightWhale]

When it came time for cities, cities appeared all over the earth. What was it that caused this to happen? Seems like only some kind of technology would cause such a revolution. The discovery of the Wheel? The Cam-phone?

[e_engineer]

It was beer.

Making beer requires an agrarian society to grow the hopps. Once the nomadic people tasted beer, they settled down to grow hopps. Each year after the harvest there was a big celebration.

The agrarians invented games to honor their hunter-gatherer heritage, and one of them was exceptionally fun to watch while drinking beer, especially on Monday nights. The game involved chasing a pig into a cage that was called a "gule".

As time went on this game was passed down through history to become what we now call baseball. ;^)

[SauronOfMordor]

When it came time for cities, cities appeared all over the earth. What was it that caused this to happen? Seems like only some kind of technology would cause such a revolution. The discovery of the Wheel? The Cam-phone?

Agriculture. Farmers need plows, hoes, scythes, pottery to store the harvest in, lots of stuff. The purpose of cities is to enable manufactoring by bringing suppliers for the various manufactoring processes close together