Why did the federal government remove american indians from the kansas and nebraska territories?

What was the main argument of plessy in plessy v. ferguson

Many blacks moved from the south to northern cities during world war li looking for employment. after the war, a number of them lost their jobs. why did this happen?

Will give brainlist need this answer asap which of the following groups made up the majority of those involved in the progressive movement? a) politicians b) farmers c) middle class d) factory worked