The Thirteenth Amendment was an extension of the policy begun by which of these? (A) the Compromise of 1850 (B) the Anaconda Plan (C) the Civil Rights Act of 1866 (D) the Emancipation Proclamation
The Thirteenth Amendment was an extension of the policy begun by "(D) the Emancipation Proclamation" since this amendment abolished slavery, and the Proclamation declared that all slaves were free. It was simply more formal.