Answer/ Explanation: The question that arose directly after the Mexican Cession was:
D: Should slavery be allowed when California is added as a state?
The Mexican Cession refers to the territory acquired by the United States from Mexico as a result of the Treaty of Guadalupe Hidalgo in 1848. This included present-day California, Nevada, Utah, Arizona, and parts of New Mexico, Colorado, and Wyoming.
After the Mexican Cession, the issue of whether slavery should be allowed in the newly acquired territories became a major point of contention. The admission of California as a state was particularly significant, as it raised the question of whether it would be a free or slave state.
This question played a crucial role in the ongoing debate over the expansion of slavery in the United States. It ultimately led to the Compromise of 1850, which attempted to address the issue by admitting California as a free state while also enacting other measures to satisfy both pro-slavery and anti-slavery factions.
So, the question of whether slavery should be allowed when California is added as a state directly followed the Mexican Cession and became a focal point of political discussions and negotiations during that time.