"C. Getting the support of Britain and France" would be the best options regarding a confederate strategy for winning the Civil War, since the Confederacy was very much lacking in funds and manpower relative to the Union.
Confederate generals did not wish to simply continue to be defensive and await the Union to make a decision of the time and place of each battle. At the terribly starting of the war, the Confederacy tried a chain defense strategy of occupying the complete border of their region. However, this stretched their forces too thin. Confederate President Jefferson Davis eventually selected an offensive-defensive strategy, a lot of versatile munition during which troops touched around to satisfy military wants rather than making an attempt to stay each a part of the border defended in the slightest degree times.
Right now britan wants to leave the EU due to their economy and how it has dropped in recent years due to having to give peart of their money to poorer countries. I am not 100% sure with this answer but I think it is somewhat accurate.
The Jacksonian Era was characterized by the need for (C) everyone to particpate in the government and (D) growth of national railroads due to the industrial revolution and westward expansion.