During the Era, humans left the continent of and spread across the globe. They were , which means they moved from place to place in search of food. They survived by tracking game and collecting plants and berries, a practice called .

The clues describe the Paleolithic Era, when early humans hunted game and gathered wild plants and berries for food. They were nomadic, meaning they moved from place to place in search of food. “Migration” means movement from one place to another, but it is not the name of the era; the correct choice is Paleolithic.

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