The Open Door policy was one United States policy from 1899 that aimed keeping equal rights for countries trading with China. The area which U.S. wanted to keep from gaining too much control was Europe. That since the Opium War was exploring and keeping privileged trades in China.
The conflict example of European/Western intrusion in China before the Boxer Rebellion is Opium Wars. The Boxer Rebellion occurred around 1900, the Opium Wars was between Western Countries and Qing Dynasty, the Western fought for territory and commercial control of China and won the war creating an equal state of trading for European Countries during 1800.
The African states' government betrayed their people. In order to thrive knowing that they could lose land if the British strike them, they gave their people away in return for guns and weaponry. Some states fought back and most lost. Others complied with the British orders and gave them slaves.
Radical Republicans were upset about both plans because they wanted to destroy all political power of farmer slave owners. They were known as "radical" republicans because they wanted to give full citizenship for African Americans so can have the right to vote.
