(A) Unequal Power in Congress
(B) ** Equal Power in Congress
(C) Equal Power in Declaration of Independence
(D) Unequal Power in Civil War
EXPLANATIONS BELOW
Concept note-1: -Northern states severly limited the rights of free African Americans and discouraged or prevented the migration of more. There was a minority of northerners called abolitionists who were vocal about ending slavery.
Concept note-2: -Mason-Dixon Line, also called Mason and Dixon Line, originally the boundary between Maryland and Pennsylvania in the United States. In the pre-Civil War period it was regarded, together with the Ohio River, as the dividing line between slave states south of it and free-soil states north of it.
Concept note-3: -Enacted in 1820 to maintain the balance of power in Congress, the Missouri Compromise admitted Missouri as a slave state and Maine as a free state.
Concept note-4: -In general, the conditions of slavery in the northern colonies, where slaves were engaged more in nonagricultural pursuits (such as mining, maritime, and domestic work), were less severe and harsh than in the southern colonies, where most were used on plantations.