What was not a justification for the increase in u. S. Involvement in vietnam?

As a result of the french fur trade in the 1600s, 1.french settlers came into conflict with english settlers.2.american indians began making fewer things themselves.3.european demand for furs dropped dramatically.4.french settlers began to exploit american indians.

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.

Which best explains parallel forces?