Question

what did the south gain from the compromise of 1850?
slavery would be legal in washington, dc.
congress would pass the fugitive slave act.
california would enter the union as a slave state.
popular sovereignty would decide the slavery issue in missouri.

Explanation:

• For the option "Slavery would be legal in Washington, DC": The Compromise of 1850 ended the slave trade (not slavery) in Washington, DC, so this is incorrect.
• For the option "Congress would pass the Fugitive Slave Act": The Fugitive Slave Act was part of the Compromise of 1850, and it required the return of escaped slaves to their owners, which benefited the South's interest in maintaining slavery and reclaiming escaped slaves.
• For the option "California would enter the union as a slave state": California entered as a free state, so this is incorrect.
• For the option "Popular sovereignty would decide the slavery issue in Missouri": The Missouri Compromise (earlier) had already dealt with Missouri, and the Compromise of 1850 used popular sovereignty for Utah and New Mexico territories, not Missouri. So this is incorrect.

Answer:

B. Congress would pass the Fugitive Slave Act.