These included Kilwa, Sofala, Mombasa, Malindi, and others. The city-states traded with inland kingdoms like Great Zimbabwe to obtain gold, ivory, and iron. These materials were then sold to places like India, Southeast Asia, and China. These were Africa's exports in the Indian Ocean Trade
Since you're in a rush, the shortest answer would be that it is D., William Seward, whom decided to buy Alaska.
Answer:
Andrew Jackson seized more presidential power than granted in the Constitution.
If my memory serves me well, the law which states that a president had to get permission to remove anyone appointed by a past president is <span>The Tenture of Office Act.</span> It was used to impeach Andrew Johnson because he fired a secretary of War Stanton.