This was a land bridge between Siberia and Alaska. Currently underwater, the land bridge was walkable during the Ice Age. The First Americans likely utilized the land bridge in some way to gradually migrate to the Americas.

These were people who migrated trough the Bering land bridge 13,000 years ago. They hunted mammoth and they were known for their flint spear heads.

When Europeans came in contact with the Americas, it marked the start of an extensive exchange of plants, animals, and diseases between the two areas of the world.

This is a geographical area that has a number of groups that have similar characteristics. They might have similar homes, clothing, or food.

This section of the world includes Africa, Europe, Asia, and the Middle East.

This refers to a group of people (or plants) who are native to a particular area.

This means to move from one place to another.

This is a well researched explanation of some aspect of the world. It can be considered to be a reliable account of the world and not just a guess or an opinion.

This half of the world includes North and South America.