This month’s coupon codes correspond with events that have happened in world history, no matter how trivial, on the same day the code is released. How many were you able to guess? Answers are below.

ENERGY: August 4, 1977 – US President Jimmy Carter signs legislation creating the United States Department of Energy.

MISSOURI: August 10, 1821 – Missouri is admitted as the 24th U.S. state.

STEAMBOAT: August 17, 1807 – Robert Fulton’s first American steamboat leaves New York City for Albany, New York on the Hudson River, inaugurating the first commercial steamboat service in the world.

EARHART: August 24, 1932 – Amelia Earhart is the first woman to fly across the United States non-stop (from Los Angeles to Newark, New Jersey).