How did the Mexican War encourage the sectional crisis in the US in the late 1840s? A)Proslavery and antislavery groups disagreed over whether the lands
acquired in the war should be open or closed to slavery.
B)Mexico was threatening to invade Texas and bring about an end to slavery
C) Mexican-produced cotton was increasing in competition with the South
and was, in turn, increasing the demand for Southern slaves.
D)Mexico was only willing to sell lands to the United States if they would be
closed to slavery.