How did four american presidents extend american influence throughout the world between 1897 and 1917?

William M ckinley -The U.S.won the spanish -american war gaining puerto rico,guam and cuba a protectorate. William MCKINLEY ANNEXED HAWAII Theodore Roosevelt aquired the panama canal zone. Theodore Roosevelt added the Roosevelt Corollary to the Monroe Doctrine. William Howard Taft implemented dollar diplomacy. President William Howard Taft signed the sixteenth amendment. Woodrow wilson declared war on Germany in World War 1.

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Social darwinism refers to the the theory that people who succeed in our economic system will one day out compete those who fail. one day the rich will out succeed the poor so we'll that there will eventually be no more poor