- 2 cents an acre: what the US paid for Alaska
- Alaska: a vast land of over 500,000 square miles
- Alaska's resources: fish, lumber, and oil
- Buffalo Soldiers: African American soldiers who fought against the Spanish in the Battle of San Juan Hill
- Honolulu: capital city of Hawaii
- James Cook: opened the door for Christian missionaries to arrrive in Hawaii
- Juneau: Alaska's capital
- Queen Liliuokalani: Hawaii's ruler
- Rough Riders: group of volunteers that went with Theodore Roosevelt to Cuba to fight
- Spanish-American War: proved that the US had become a world power
- William McKinley: sent the battleship USS Maine to protect Americans in Havanna, Cuba