Modern perceptions of racial difference in American society

How  Atlantic Slave Trade shape our modern perceptions of racial difference in American society? Provide three historical examples from the Atlantic Slave Trade to support  Slavery in Colonial and Antebellum America – How and why did slavery become an entrenched part of American society during the colonial and antebellum periods? Provide three historical examples to support your answer. The Politics of Slavery and the American Civil War

Why and how did the issue of slavery divide the nation during the 1850s? Why did the issue of slavery and the emancipation of slaves influence Lincoln’s war strategy during the Civil War between 1861 and 1863?  Provide three historical examples to support the first question, while pointing out the circumstances that compelled Lincoln to alter his war strategy between 1861-1863 for the second question.