By the outset of 1864, after three years of war, the Union had mobilized its resources for the ongoing struggle on a massive scale. The government had overseen the construction of new railroad lines and for the first time used standardized rail tracks that allowed the North to move men and materials with greater ease. The North’s economy had shifted to a wartime model. The Confederacy also mobilized, perhaps to a greater degree than the Union, its efforts to secure independence and maintain slavery. Yet the Confederacy experienced ever-greater hardships after years of war. Without the population of the North, it faced a shortage of manpower. The lack of industry, compared to the North, undercut the ability to sustain and wage war. Rampant inflation as well as food shortages in the South lowered morale.