Explorers Unit

This ocean served as the highway for explorers, early settlers, and later immigrants.

• Atlantic

• Pacific

• Indian

• Arctic

This ocean was an early exploration destination.

• Atlantic

• Pacific

• Indian

• Arctic

The coasts of these two oceans have provided access to other areas of the world.

• Atlantic and Pacific

• Pacific and Indian

• Indian and Pacific

• Arctic and Atlantic

These rivers were used to transport farm and industrial products.

• St. Lawrence and Missouri rivers

• Rio Grande and Mississippi rivers

• St. Lawrence and Rio Grande rivers

• Mississippi and Missouri rivers

This river was the gateway to the west.

• St. Lawrence

• Rio Grande

• Ohio

• Columbia

This river was explored by Lewis and Clark.

• St. Lawrence

• Colorado

• Ohio

• Columbia

This river was explored by the Spanish.

• St. Lawrence

• Colorado

• Ohio

• Columbia

This river forms the border with Mexico.

• Rio Grande

• Colorado

• Ohio

• Columbia

This river forms part of the northeastern border with Canada and connects the Great Lakes to the Atlantic Ocean.

• Rio Grande

• Colorado

• Ohio

• St. Lawrence

Inland port cities grew in the Midwest along the _________.

• Mississippi River Valley

• Gulf of Mexico

• Great Lakes

• Rio Grande River