Ancient Greece and ancient Rome
Explanation: quickest answer
The League of Nations was established after WWl between the United States and some European countries as an attempt to try to stay out of future wars. It was proposed by President Woodrow Wilson, but Congress denied involvement in the organization due to the fact that they believed we should not be meddling in Europe's affairs.
Hunter-Gatherers were nomadic tribes who relied on moving to different locations in search of fertile hunting/gathering grounds. Sometimes, these lands they explored were barren, while some were plentiful, but the key was to keep moving, so they could not stay in the fertile land for long.
Eventually, humans started to farm, and domesticate animals, which led into the Neolithic Era (civilization). Farming gave humans the assurance of constant food, and furthermore, set more social roles and behavioral standards for communities. However, this transition caused the loss of equality for different people in a community, and raised the style of living we know, with the establishment of classes and governments.
