The answer is "it kept the balance of slave states and free states equal"
The Missouri Compromise is created in order to form a balance between the free states and slave states. In this compromise, it gave Missouri a chance to become a slave state, in turn, Maine would become a free state.
The affect that geography had on the economy of the middle colonies was to help the economy. Farming was the main source of the economy and the fertile soil, and natural resources aided the Middle colonies economy.
The Confiscation Acts themselves did not do much but laid the legal and social groundwork for the Emancipation Proclamation which would come in the following year.
Lincoln was able to capitalize on the reaction to the Confiscation Act to feel comfortable enough to push forward the Emancipation Proclamation, which applied to all slaves in rebel held territory.
Section4. In 1865 President Andrew Johnson implemented a plan of Reconstruction that gave the white South a free hand in regulating the transition from slavery to freedom and offered no role to blacks in the politics of the South.
