the edge of unfamiliar land.
Frontier
Robert Fulton developed the ______.
Steamboat
The Erie Canal connects Lake Erie with the ______.
Hudson River
The Union Pacific and Central Pacific joined together to form the ______.
Transcontinental Railroad
The Cherokee writing system was created by ______.
Sequoyah
The Pony Express was ______.
A fast way of sending mail
A person who trains horses and guards cattle is called a ______.
Cowboy
The road that took people west was called the ______.
The Oregon Trail
People rushed to California because ______.
They wanted to find gold
Plains Native Americans got most of what they needed from ______.
Bison
The forced march of the Cherokee people to Oklahoma is called the ______.
Trail of Tears