system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5:In the U.S., why is milk sold in gallons, but soda is sold in a 2 liter?
gpt
Sometime in the early 70's the US was going to attempt to move to the metric system.  During this time the 2L soda bottle was introduced.  While the US did not move to the metric system, the soda bottles remained.