How did America have so much money going in to the 1920's

The 1920s is the decade when America's economy grew 42%. Mass production spread new consumer goods into every household. The modern auto and airline industries were born. The U.S. victory in World War I gave the country its first experience of being a global power.

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either b) they were often feared and despised by other native cultures. or

c) their obsession allowed them to coexist with many other native cultures because of their peaceful nature.