The immigration restriction legislation of the 1920s established a system for regulating immigration on the basis of

Which events are correlated but do not necessarily have a causal relationship?

What is domino theory? how did domino theory impact the us involvement in the vietnam war

Why was president truman against declaring war on china during the korean war? a. he was buying time si that the us could develop more attomic weapons b. he feared that the soviet union might offer china military support c. he was planning the withdrawal of us troops from south korea d. he was afraid that china would support north korea