The two opium wars were between china and

China (Qing Dynasty) and the British Empire

Explanation:

The opium wars were two wars that took place in the middle of the 19th century. The wars were between China, with the Manchurian Qing Dynasty as its leader, and the British Empire. The opium wars got their name because basically the wars were waged because of the opium trade. The British wanted to impose the opium on China through trade, and the Chinese of course did not wanted that to happen, so they went to war. The British turned out as the victorious side in this wars, and that had huge negative impact for around a century on the Chinese development and economy.

after the roman empire, the catholic church began to unify by taking on many duties of a government.

regarding the law, the 15th amendment was specifically designed thinking in the rights of black free men.

even though ratified on february 3, 1870, the promise of the 15th amendment would not be fully applied for a long time.poll taxes and literacy tests would allow southern states disenfranchise african americans. only in 1965 the voting rights for african americans would be actually able to vote in the south.

in 1965, president johnson signed the voting rights act, which aimed to overcome legal barriers that prevented african americans from voting as it was guaranteed by the 15th amendment to the u.s. constitution.