How did the battle of antietam change the course of the american civil war?

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Explanation:

dirty, contaminated water

contaminated food,

chlostrophobic living spaces,

mice infestation,

etc,

in 1803 the louisiana purchase took place, doubling the size of the country. by 1840 almost 7 million americans had migrated westward in hopes of securing land and being prosperous. the belief that settlers were destined to expand to the west is often referred to as manifest destiny.

explanation: