The NAACP (National Associantion for the Advancement for the Coloured People) and it was mainly present during the Civil Right's Movement. Therefore, they protested discrimination towards people of colour.
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The soviets responded to the East Berliner's decision to defect to the west in large numbers by building the Berlin wall, separating east Berlin, and west Berlin.
Answer:
the Nile river helped establish direct trade between the people
Because they share some cultures