Answer:
1900 – U.S. population exceeds 75 million.
1900 – U.S. helps put down Boxer Rebellion.
1900 – 1900 Galveston hurricane.
1900 – U.S. presidential election, 1900: William McKinley re–elected president; Theodore Roosevelt elected vice president.
Explanation:
Answer:
World War 1, World War 2, The Great Depression, The Cold War
Explanation:
WW1, WW2, and The Cold War are all obvious, pretty sure the great depression is another major event
If you meant decade then the answer above should help you