What caused many african americans to move away from the south

In the first half of the 20th century,literacy tests,poll taxes, and grandfather clauses were passed by the southern states in order to

After ww2, the soviets began setting up what type of governments in countries closest to them

When did martin luther king, jr. deliver his famous "i have a dream" speech? a. during the montgomery bus boycott b. during the birmingham campaign c. during his acceptance of the nobel prize d. during the march on washington