Li Na became the first Asian-born tennis player to be entered into the International Tennis Hall of Fame.
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A medical paper on smallpox was published in Boston, making it the first medical publication in American history.
Over two million women worldwide marched against Trump's anti-women and offensive slews.
America's Rocket Lab Electron sent a rocket that uses an electric-filled pump engine into orbit, making it the first of its kind.
New York City passed a law prohibiting women from smoking in public places.
King of France, Louis XVI, faced gruesome guillotine execution for high treason.