How and why did america aid european nations after world war ii?

The Marshall Plan (officially the European Recovery Program, ERP) was an Americaninitiative to aid Western Europe, in which the United States gave over $13 billion (approximately $130 billion in current dollar value as of June 2016) in economic support to help rebuild Western European economies

Nomads were the earliest humans from Africa, while hunter-gatherers developed during the Neolithic era. ... Nomads were people who moved in search of food, while hunter-gatherers get food by gathering wild food sources and hunting. Same answer as the other person, but more qualification that it's right. Hope this helps. c;