Sea levels rose, causing extreme flooding in parts of Asia and North America.

Sea levels dropped, exposing the ocean floor and creating a land bridge between Asia and North America.

Sea levels rose, causing plant life to grow more in parts of northern Asia.

Sea levels dropped, causing the oceans to dry to create a larger landmass between North America and Europe.

A.D. 2022

36,000 B.C.

A.D. 1200

9700 B.C.

They wanted to establish military treaties with the nomads in North America, in order to become a powerful army.

They followed other nomads who had created a roadway to southern region of North America.

They wanted to find new vegetation to sell in their original homeland, in order to make more money.

They followed the animals that had migrated across the land bridge, in order to hunt them.

They collect fossils and date them based on the measurement of radioactive elements.

They collect artifacts, such as tools, pottery, bones, and shells.

They collect biographies and date them based on the year they were published.

They collect data from research analysts to create spreadsheets.

They made trade deals between other hunter-gatherer groups.

They hunted large mammals, ate nuts and fruits, and made shoes out of the leaves of plants.

They built large huts with open-air chimneys to cook their hunted meat.

They made peace treaties with other hunter-gatherer groups to build economic partnerships.

The shelters were near large hunting grounds of large mammals.

The shelters were next to glaciers to keep cool during hot summers.

The shelters were near rivers and streams, where fresh water was available.

The shelters were made to withstand severe weather and to protect from animal attacks.

The application of scientific discoveries to practical use

Any object made or used by humans such as tools, pottery, bones, and shells

Social rank or position

Referring to a group that traces kinship the mother's line

A person who lives by hunting and gathering food, rather than growing it

A union of different groups

A mix of sun-dried earth and straw used to build houses

To move from one place to another

The application of scientific discoveries to practical use

To move from one place to another

A union of different groups

Referring to a group that traces kinship through the father's line

A person who lives by hunting and gathering good, rather than growing it

To move from one place to another

A person who moves from place to place

A union of different groups