In its American colonies, Spain helped the Catholic Church meet its goal of "converting natives to Christianity" although it should be noted that the primary goal of the Spanish in the colonies was to extract gold and other riches.
African Americans in the Civil War faced many problems. They were usually treated differently and had restricted roles. This doesn't mean that they didn't fight just as bravely as the other solders. Many of them died nobly for their cause.
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Britain, the major power involved in the Atlantic slave trade, passed the comparable Abolition of the Slave Trade Act that same month.
Many people who were no longer servants or slaves found a new life of a ranch work and independence in the Far West.