Front

Explorers from _____ brought horses to North America.

Back

Spain

Front

Who explored the land west of the Mississippi River?

Back

Meriwether Lewis and William Clark

Front

What was built to let boats get through safely?

Back

canal

Front

What was built to make traveling easier on a wagon train? Options: the National Road, a canal, a bridge, a gate

Back

the National Road

Front

When was the first steam locomotive built?

Back

1804

Front

What helps pay for building and fixing roads?

Back

tolls

Front

Who were the two brothers that began building airplanes?

Back

Orville and Wilbur Wright