strengthened its military position. In Washington, proposals for compromise and reunion went nowhere, as the Confederates demanded complete, total, permanent independence. When Lincoln dispatched a supply ship to federal-held Fort Sumter, in South Carolina, the Confederate government ordered an attack on the fort, which surrendered on April 13. President Lincoln called upon the states to supply 75,000 troops to serve for ninety days to recover federal property, and, forced to choose sides, Virginia, Arkansas, Tennessee, and North Carolina promptly voted to secede. Kentucky declared its neutrality. Civil War (1861–1865) The seceded states, joined together as the Confederate States of America and only wanting to be independent, had no desire to conquer any state north of its border. After secession, no compromise was possible, because the Confederacy insisted on its independence and the Lincoln Administration refused to meet with President Davis's commissioners. Instead of diplomacy, Lincoln ordered that a Navy fleet of warships and troop transports be sent to Charleston Harbor to reinforce and resupply Fort Sumter. Just before the fleet was about to enter the harbor, Confederates forced the Federal garrison holed up in the fort to surrender. That incident, although only a cannon duel that produced no deaths, allowed President Lincoln to proclaim that United States forces had been attacked and justified his calling up of troops to invade the seceded states. In response the Confederate military strategy was to hold its territory together, gain worldwide recognition, and inflict so much punishment on invaders that the Northerners would tire of an expensive war and negotiate a peace treaty that would recognize the independence of the CSA. Two Confederate counter-offensives into Maryland and southern Pennsylvania failed to influence Federal elections as hoped. The victory of Lincoln and his party in the 1864 elections made the Union's military victory only a matter of time. Both sides wanted the border states, but the Union military forces took control of all of them in 1861–1862. Union victories in western Virginia allowed a Unionist government based in Wheeling to take control of western Virginia and, with Washington's approval, create the new state of West Virginia. The Confederacy did recruit troops in the border states, but the enormous advantage of controlling them went to the Union. The Union naval blockade, starting in May 1861, reduced exports by 95%; only small, fast blockade runners—mostly owned and operated by British interests—could get through. The South's vast cotton