China was not supportive of attempts by the United States in A. Creating a Sphere of influence
B. Trade with Great Britain
C. The Roosevelt Corollary
D. The Spanish American War

Prior to the presence of europeans on the continent, the slave trade in africa a) did not exist in any form. b) was limited to internal trade only. c) included the trans-saharan and indian ocean slave trade. d) was rarely needed due to the lack of an agricultural economy.