What is an overall theme about government that is communicated by the preamble and the bill of rights

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’s the negative consequences of telegraph ? explain in your own words

What from the columbian exchange had perhaps the biggest impact on the world?