sep 17, 1862 - Battle of Antietam
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The Battle of Antietam, fought on September 17, 1862, near Sharpsburg, Maryland, was the bloodiest single-day battle in American history, with about 22,000 casualties. This significant Union victory provided President Abraham Lincoln the opportunity to issue the preliminary Emancipation Proclamation, which declared the freedom of slaves in Confederate-held territory.
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