Not sure if this is the answer your looking for but one could be They reacted to it harshly, and were suspicious of all immigrants that came to American from a communist country
The answer is "B", varied ecological regions.
Oklahoma contains 10 distinct ecological regions. That is more ecological regions per square mile than in any other state by a wide margin.
The main reason why the African-American students in Greensboro, North Carolina staged a sit-in in 1960 was that they were racial discriminately denied a service in the restaurant there. Therefore, in an attempt to desegregate the South, they protested peacefully to the opposition by staging a "sit-in."
Answer:
The Iron Curtain
Explanation:
It was a political barrier created by the soviet union to isolate itself from the democratic influence of the west.
<span>fffffffffffffffifty years ago, the U.S. enacted a sweeping immigration law, the Immigration and Nationality Act, which replaced longstanding national origin quotas that favored Northern Europe with a new system allocating more visas to people from other countries around the world and giving increased priority to close relatives of U.S. residentsssssssssssssss.</span>
