Why were slaves central to the plantation system?

What was a shilling worth in 1739 in US dollars? The first place the sun hits the United States everyday? First colonists of Carolina? In a federal system of government what is the final authority? What is a major difference between the progress of a bill in the House as opposed to the senate? What years was slavey abolished? What is the wright brothers birth date? When was the 3 cent stamp used in the us? What coutry was responsible for lauching the first successful uprising against lavery in latin America? Who invented the straighting comb? How did the invention of the cotton gin affect slavery in southern America? What is the value of an 1835-O US silver dollar? Who Isabel Sumner? What were the principal causes of colonial violence and warfare of the late seventeenth century in America? When was the year of the Crossing of Delaware? What are three facts about John D Rockefeller? What were the 7 major regional groups in north America and some of the indigenous tribes associated with each region? What were Lincolns views on slavery expressed in his Second Inaugural Address? What was the political and civic life in the southern colonies? Did the Civil War start before or after the invention of the typewriter?