Based on this excerpt, how did early humans adapt to their environment?

Explanation:

So humans adopted to their environment. Because of agriculture agriculture made their lives so easier people also had accesses to new information. People also domesticated animals and grew crops and plants which meant more food. And it grew into a day job for them. And they got use to farming and agriculture

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It caused intense debate as to whether or not

the United States should enter the War

It convinced the Americans that isolationism was the most effective foreign policy