Which answer best explains how slavery was an issue in relation to the mexican-american war?
a the spread in slave trading to asia caused disagreements amongst americans.
b there was a great deal of disagreement over whether slaves should fight in the war.
c the united states and mexico disagreed over who had ownership of slaves that lived in texas.
d americans disagreed over whether slavery should be allowed in the land gained during the war.

d Americans disagreed over whether slavery should be allowed in the land gained during the war.

Explanation:

In the war with Mexico (1846 - 1848), the United States acquired over 500,000 square miles of Mexican territory.

The war renewed the slavery-extension argument because the abolitionists feared the slave states intentions were to extend slavery in the new territory to improve their strength.

Although the subject was finally resolved by the Compromise of 1850, the growing sectional enmity had already come close to the civil war.

in 1862, president lincoln's emancipation proclamation opened the door for african americans to enlist in the union army. although many had wanted to join the war effort earlier, they were prohibited from enlisting by a federal law dating back to 1792.

explanation:

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