"Yick Wo v. Hopkins, 118 U.S. 356 (1886), was the first case where the United States Supreme Court ruled that a law that is race-neutral on its face, but is administered in a prejudicial manner, is an infringement of the Equal Protection Clause in the Fourteenth Amendment to the U.S. Constitution.
Answer:
Up until 1895, the U.S. didn't get involved when European governments would create puppet governments, so as to avoid obvious colonization.
The immigrants contributed significantly to United States history from the period 1900 to 1940. Immigration was widely spread in the North while the South (aside from slave immigration) remained mostly American born citizens...about 14.5% of the population were immigrants and it was a huge force for the labor industries