US History: Period 1

Front

About how long ago may the first Americans have arrived?

Back

22,000 years ago

Front

What geological feature possibly allowed migration from Asia to North America?

Back

The Bering Land Bridge

Front

The land bridge between Asia and Alaska is known as:

Back

Beringia

Front

What caused the land bridge between Asia and North America to disappear?

Back

Rising sea levels from melting glaciers

Front

The earliest Americans were primarily:

Back

Big-game hunters

Front

Around 12,000 to 10,000 years ago, what forced early Americans to adapt their lifestyles?

Back

Warming climate and disappearance of large animals

Front

What was the major change that occurred between 10,000 and 5,000 years ago in central Mexico?

Back

Introduction of agriculture

Front

Agriculture allowed early peoples to:

Back

Settle in one place and store surplus food

Front

The first empire of the Americas emerged in:

Back

Southern Mexico

Front

Which people created a thriving civilization around 1200 B.C. in southern Mexico?

Back

Olmec