Why did the kansas-nebraska act anger many members of the free-soil party? they did not want slavery to spread into the free states. they were afraid the territories would vote against slavery. they were afraid the territories would be filled with slaveholders. they opposed the missouri compromise, which the act supported.

They were afraid the territories would be filled with slaveholders.

Explanation:

The Free-Soil Party aimed for the end of slavery on American soil, particularly on the recently incorporated territory.

The Kansas-Nebraska Act (1854), proposed by Stephen A. Douglas, stated popular sovereignty to recognize the settlers´ right to make that decision within the new state. This act raised rather than reduced sectional conflicts, leading to Bleeding Kansas, a period of violence foregoing the American Civil War.

C=They were afraid the territories would be filled with slaveholders.

Explanation:

what the first or next guys says