Prohibition By ajgottwald Aug 1, 1917 18th Amendment Proposed The 18th Amendment is presented to the states to be ratified. Nov 18, 1918 Wartime Prohibition President Woodrow Wilson passes a wartime prohibition law. This is to save grain for the war effort Jan 16, 1919 18th Amendment Ratified The Amendment is ratified Jan 17, 1920 Start of Prohibition Dec 5, 1933 End of Prohibition The 21st Amendemnt is ratified
