<human>:  When did the first humans arrive in the Americas?
<bot>: The first humans arrived in the Americas between 15,000 and 30,000 years ago. Humans first migrated into the Americas from Siberia and from Asia. The first humans who arrived in the Americas were hunter-gatherers who lived in small groups and relied on hunting and gathering for their food. These early humans migrated across the Bering land bridge that connected Siberia to Alaska. These early humans then moved southward into the Americas.