Which statement supports this sentence?

enslaved africans and indentured servants were critical to the success of colonial farms.

a. africans came to the colonies over the sea on boats.
b. africans contributed to the foods and music of the colonies.
c. african culture is still alive and thriving in the south.
d. africans tended the settlers' land and harvested crops.

The case of brown v. board of education was started when a. oliver brown's daughter had to walk 21 blocks to the nearest school when an all-white school was only 7 blocks away. b. oliver brown's son was caught at a sit-in at the local school district. c. oliver brown's son was unable to participate in the school's all-white football team. d. oliver brown's daughter was unable to attend high school because there were none for her to attend.