Answer: All-encompassing sectional differences on the issue of slavery, such as outright support/opposition of slavery, economic practices, religious practices, education, cultural differences, and political differences kept the North and South at near constant opposition to one another on the issue of slavery.
Originally, colonialism had caused a great divide between the the colonial slaves and Spanish and Portuguese people. However, owing ti the contact between slaves and owners in these colonoes, the concept of equality between races became easier to grasp for the South Americans. They started viewing the race barriers more open-mindedly. Moreover, cross-mixing caused numerous social classes to be created of mixed race.
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