U.S. Secretary of State William Seward welcomed the withdrawal of concessions to the Confederates but objected to the exceptions. Finally, on October 18, 1865, Russell advised the Admiralty that the time specified in his June 2, 1865 message had elapsed and "all measures of a restrictive nature on vessels of war of the United States in British ports, harbors, and waters, are now to be considered as at an end". Nonetheless, the final Confederate surrender was in Liverpool, England where James Iredell Waddell, the captain of the CSS Shenandoah, surrendered the cruiser to British authorities on November 6, 1865. Legally, the war did not end until August 20, 1866, when President Andrew Johnson issued a proclamation that declared "that the said insurrection is at an end and that peace, order, tranquillity, and civil authority now exist in and throughout the whole of the United States of America". Union victory and aftermath Explaining the Union victory The causes of the war, the reasons for its outcome, and even the name of the war itself are subjects of lingering contention today. The North and West grew rich while the once-rich South became poor for a century. The national political power of the slaveowners and rich Southerners ended. Historians are less sure about the results of the postwar Reconstruction, especially regarding the second-class citizenship of the freedmen and their poverty. Historians have debated whether the Confederacy could have won the war. Most scholars, including James M. McPherson, argue that Confederate victory was at least possible. McPherson argues that the North's advantage in population and resources made Northern victory likely but not guaranteed. He also argues that if the Confederacy had fought using unconventional tactics, it would have more easily been able to hold out long enough to exhaust the Union. Confederates did not need to invade and hold enemy territory to win but only needed to fight a defensive war to convince the North that the cost of winning was too high. The North needed to conquer and hold vast stretches of enemy territory and defeat Confederate armies to win. Lincoln was not a military dictator and could continue to fight the war only as long as the American public supported a continuation of the war. The Confederacy sought to win independence by outlasting Lincoln; however, after Atlanta fell and Lincoln defeated McClellan in the election of 1864, all hope for a political