Why did Ireland immigrate to America?

The United States, known as the "ethnic melting pot", is a typical immigrant country, and its immigration history can be traced back to 1620 at the earliest. In the past 400 years, the United States has become a mixture of more than 65,438,000 ethnic groups. Even the Statue of Liberty standing in new york 1886 "immigrated" from France to the United States. Immigrants came here with their dreams.