Who was the scientist that developed hundreds of new products using peanuts and sweet potatoes?

What was the name of the man-made shortcut through Central America?

What was the name of the trail used to guide cattle north from San Antonio to Abilene, Kansas?

What was the first war that led to America becoming a major world power?

Who is the inventor of the telephone?

What was the name of the trail used to guide cattle north to new railroad lines across the Great Plains?

Who was the US President during the construction of the Panama Canal?

Immigrants came to _________ when they arrived in the United States.

Which men took the first powered flight in an airplane that they made themselves?

George Washington Carver found many uses for _______.

Who was the man who invented the first light bulb?

Who was the President during the Spanish-American War?

Most immigrants came from which continent?

The Spanish American War was caused by the sinking of which battleship?