I’m going with beer as a trigger for agricultural revolution. You see occasional stories about a moose getting drunk and stuck in a tree on fermenting apples.

I’m going with beer as a trigger for agricultural revolution. You see occasional stories about a moose getting drunk and stuck in a tree on fermenting apples. Now some ancient hillbilly figures out that they can get drunk on fermenting fruit. So eventually someone gets the bright idea to try and do it themselves.