Answer:
Even after the end of colonial empires and the rise of new , modern states in Asia after WWII, old racist prejudices remain. Some circles in Europe, Australia and the US (the West) continue to believe in the superiority of Western values and models, demeaning Asian local cultures and experiences. Those notions and attitudes usually fail to understand local history and political cultures, and customs.
Explanation:
During the ensuing decades, the abolitionist movement grew in Northern states, and Congress regulated the expansion of slavery as new states were admitted to the Union. Britain banned the importation of African slaves in its colonies in 1807 and abolished slavery in the British Empire in 1833.
Some were slaves so they were mad
Even though slavery was abolished, that did not mean the white people would stop treating the black people with a lack of respect. Thus lead to segregation some years later, and then resulted in the civil right movement.