C. the Colorado River is the correct answer :D
Answer: Cannons were used primarily as anti-infantry weapons until around 1374, when large cannons were recorded to have breached walls for the first time in Europe. Cannons featured prominently as siege weapons, and ever larger pieces appeared.
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Lincoln promised the South it could keep its enslaved people if it returned to the Union, while Davis insisted the Confederacy would not return.
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Battle in which Robert E. Lee defeated Ambrose Burnside, causing the most one-sided victory in the war after Burnside led the Union troops in multiple uphill frontal attacks Ambrose Burnside Union general who replaced McClellan after Antietam and was horribly defeated by Robert E. Lee at the Battle of Fredericksburg.
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