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A major Civil War battle ends, America gains a new state, Jim Morrison overdoses, and summer blockbusters dominate theaters, all on this day.
1775: During the American Revolutionary War, George Washington takes command of the Continental Army at Cambridge, Mass.
Have you ever wondered where the tradition of putting up a tree for Christmas came from? Or why we light a menorah for Hanukkah? Find out about the interesting origins of many holiday traditions right here.