system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5:How did Coca Cola become the world's most famous drink brand?

I remember asking this in high school in social studies, and the teacher just replied "Because it tastes good. Next question?"
But now I'm sure that there are other pivotal reasons, such as prohibition and marketing campaigns in a globalizing world.
gpt
I believe it has something to do with World War 2. Coca Cola had a large contract with the government at the time and they were able to open a bunch of bottling plants with the Allied advance through Europe.  This allowed them to readily manufacture and sell their product to Europeans and GIs coming home had a taste for it. Coke pretty much took off from there. 

Edit: Did some digging and found that in 1943 Eisenhower requested Coca Cola provide materials to open 10 bottling plants in Europe. This claim says it layer the foundation for it to reach the global market.