Why did old immigrants come to america? the new immigrants?

Which caused demand for farm products to decline after world war i

What best explains why the us government placed restrictions on asian immigration through angel island? many americans did not believe in assimilation. many americans did not approve of the gentleman’s agreement. many americans held nativist or racist views. many americans feared a loss of educational opportunities.

What were the economic, religious and social/political factors in the abolition of slaves