What are you 10 interesting facts about the 1930s in america

3M employee Richard Drew invents Scotch Brand Cellulose Tape in 1930. Today, it is widely known simply as "Scotch Tape."
The Mickey Mouse comic strip debuts in the January 13, 1930, edition of the New York Mirror.
On October 17, 1931, Chicago gangster Al Capone was convicted of income tax evasion and later sentenced to 11 years in federal prison.
Democrat Franklin D. Roosevelt defeats incumbant Republican Herbert Hoover in the 1932 election.
The Boulder Dam (today known as "Hoover Dam") is completed 2 years ahead of schedule on March 1, 1936.
Jesse Owens wins four gold medals during the 1936 Summer Olympics.
Ty Cobb, Walter Johnson, Christy Mathewson, Babe Ruth, and Honus Wagner become the first inductees into the National Baseball Hall of Fame in 1936.
The German airship Hindenburg is destroyed while attempting to land at the Lakehurst Naval Air Station on May 6, 1937.
American aviation pioneer Amelia Earhart disappears over the Pacific Ocean while attempting to circumnavigate the globe, July 2, 1937.
Superman debuts in Action Comics #1 in June 1938.
Gone with the Wind wins the Academy Award for "Best Picture" in 1939.

Democracy and darwinism would be my answer.