Vitamin C and the common cold but it has halved the frequency of colds in people under heavy short-term physical stress. There is no effect of taking vitamin C in doses up to 8 grams per day after a cold has already begun. Vitamin C was identified in the early part of the twentieth century, and there was much interest in its possible effects on various infections including the common cold. A few controlled trials on the effect of vitamin C on the common cold were carried out already in the 1940s, the earliest of these appears to be a placebo-controlled trial published in 1945. The
History of the United States Navy ended by the Treaty of Paris in 1783, and by 1785 the Continental Navy was disbanded and the remaining ships were sold. The frigate , which had fired the last shots of the American Revolutionary War, was also the last ship in the Navy. A faction within Congress wanted to keep the ship, but the new nation did not have the funds to keep her in service. Other than a general lack of money, factors for the disarmament of the navy were the loose confederation of the states, a change of goals from war to peace, and more domestic and