How were most of the political boundaries of africa created? africans went to the polls to democratically vote for their preferred boundaries. african leaders who seized power arbitrarily determined the boundaries. european colonial powers established boundaries before vacating the lands. the member nations of the united nations voted collectively to determine the boundaries.

Why were presidents andrew jackson and martin van buren unwilling to annex texas? a. they did not want texas to be admitted to the union as a slave state. b. they feared that the annexation of texas as a slave state would lead to political problems within the union. c. they thought that texas was too large to be admitted to the union as one state. d. they did not believe in the idea of manifest destiny.