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- July 14, 1798 – The Sedition Act was passed by the United States Congress, making it a crime to criticize the federal government.
- July 14, 1865 – The United States Army began their four-year expedition led by General William T. Sherman through the western United States, exploring and mapping a large portion of the country.
- July 14, 1881 – American outlaw Billy the Kid was shot and killed by Sheriff Pat Garrett in Fort Sumner, New Mexico.
- July 14, 1933 – The first Major League Baseball All-Star Game was held at Comiskey Park in Chicago during the 1933 World’s Fair; the American League won the game, with Babe Ruth hitting the first home run.
- July 14, 1951 – The George Washington Carver National Monument in Diamond, Missouri, became the first national park honoring an African American.
- July 14, 1960 – Jane Goodall arrived in what is now Tanzania to begin her groundbreaking studies on chimpanzees’ behaviors and social structures.
- July 14, 1965 – Mariner 4, a NASA spacecraft, took the first close-up images of Mars when it successfully flew by the planet.
- July 14, 1976 – California Supreme Court Justice Rose Bird became the first female Chief Justice of California.
- July 14, 1995 – The MP3 (MPEG-1 Audio Layer III) format was officially registered as a patented technology by Fraunhofer-Gesellschaft in Germany.
- July 14, 2015 – NASA’s New Horizons spacecraft made its closest approach to Pluto during its flyby mission of our solar system’s most distant planet.