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The Missouri Compromise was United States federal legislation that admitted Maine to the United States as a free state, simultaneously with Missouri as a slave state, thus maintaining the balance of power between North and South in the US Senate.
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Answer:
On November 1, 1861, President Abraham Lincoln names George Brinton McClellan general in chief of the Union army, replacing the aged and infirm Winfield Scott.
Military Conflict: Battle of Antietam
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The answer is:
D. US troops, following orders from President Polk, claimed an area of disputed land for the United States which caused an attack by Mexico in retaliation
Explanation:
The major cause of the war was actually the annexation of Texas by the US in 1845. Among tensions, skirmishes and a failed diplomatic mission, president Polk ordered American troops commanded by Gen. Zachary Taylor to occupy the disputed zone between Río Nueces and Río Grande (Río Bravo for Mexicans) in January 1846. Taylor´s men were attacked by Mexican troops in April killing or injuring 16 of them. Polk claimed Mexican soldiers had attacked US troops and "shed American blood upon American soil." He requested a declaration of war. Congress overwhelmingly voted to declare war on Mexico on May 13, 1846.
