What were the three main reasons that people immigrated to the u. s.?

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.

Freedom of speech, new life, and religious prosecution

Increasing the release of greenhouse gases and pollution