<span><span><span>The main goal was stability
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It outlawed the discriminatory voting practices adopted in many southern states after the Civil War, including literacy tests as a prerequisite to voting. This “act to enforce the fifteenth amendment to the Constitution” was signed into law 95 years after the amendment was ratified.
That "<span>(4) Communism would spread through eastern and southeastern Asia" was common concern with both of these conflicts. This created a policy of "containment" </span>
The main cause was the Stock Market Crash of 1929.