In the 1850s, the term “bleeding kansas” referred to
a. fierce attacks by american indians.
b. battles during the civil war.
c. violence related to slavery.
d. the forced relocation of american indians.

C. violence related to slavery.

I just took the test.

C. violence related to slavery.

Explanation:

The "Bleeding Kansas" consisted of small but violent civil wars fought in the new Territory of Kansas created under the Kansas-Nebraska Act (1854), legislation that held the principle of sovereignty (giving residents the right to determine whether the area became a free state or a slave state) while opposing the Missouri Compromise of 1820, which was an agreement that excluded most of the Louisana Purchase, including Kansas, from slavery. This series of violent confrontations, then, were related to the legality of slavery in the new state.

what are the options?

not sure might be he acquired the entire oregon territory from great britain