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at charleston harbor, it began the civil war -
it was in massas virgina and it created a real army of 500k volunteers for 3 yrs -
its was in maryland and it allowed african americans to fight in battles -
it was in some confederate states, and it shifted the focus of war -
it was in new york, and 1200 were killed -
it was at the mississippi river, it made the south split in two