To what extend was america the land of opportunity for immigrants during the late 1800s and early 1900s?

In the late 1800s, people in many parts of the world decided to leave their homes and immigrate to the United States. Fleeing crop failure, land and job shortages, rising taxes, and famine, many came to the U. S. because it was perceived as the land of economic opportunity.

they both built pyramids.