<a href="https://en.wikipedia.org/wiki/World_War_I" id="mwpA" rel="mw:WikiLink" title="World War I">World War I</a>: <a href="https://en.wikipedia.org/wiki/First_Battle_of_the_Marne" id="mwpQ" rel="mw:WikiLink" title="First Battle of the Marne">First Battle of the Marne</a> begins. Northeast of Paris, the French attack and defeat German forces who are advancing on the capital.