Decline of Sumer:
Poor irrigation reduced agricultural yields.
Population moved.
Elamite invasion.
Answer:
Two distantly related branches of the family from Oyster Bay and Hyde Park, New York rose to national political prominence with the elections of Presidents Theodore Roosevelt (1901–1909) and his fifth cousin Franklin D. Roosevelt (1933–1945), whose wife, First Lady Eleanor Roosevelt, was Theodore's niece
Explanation:
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