Fact checking:
Once you have larger population centers clean drinking water is hard to maintain so you need to find an alternative.
Europe came up with beer which kills a lot of the bacteria in the brewing process and Asia came up with boiling water into tea.
In Asia a large % of the population carries genes that mean its harder for their body to deal with alcohol which was fine because they didn't need it. Unrelated but similar is a higher % of lactose intolerance in Asia because they didn't rely on dairy as a key food source.
|