Which describes the main reason why european powers expand their presence in africa? (1 point)

a. to explore african rivers and learn about african plants and animals

b. to cooperate with other european powers to spread christianity throughout africa

c. to expand their trade in africa, the indian ocean, and india

d. to make agreements with african leaders to work and trade together with arab traders

Me! why was marbury v. madison such an important case? a. it confirmed that the supreme court was more powerful than congress but less powerful than the president b. it confirmed the authority of the supreme court to review a law in to determine whether or not that law is constitutional. c. it confirmed the authority of congress to increase or decrease the power of the supreme court. d. it gave the supreme court the power to confirm federal judges.