The document provides facts and events from the 1920s decade. It summarizes key cultural, social, political and economic developments including:
1) The St. Valentine's Day Massacre of 1929 where Al Capone's gang killed seven rivals.
2) The stock market crash of October 1929 that ended postwar prosperity.
3) The Harlem Renaissance of the 1920s which saw a flowering of African American arts and letters.
4) Amelia Earhart becoming the first woman to fly solo across the Atlantic Ocean in 1928.