The Whiskey Rebellion was a violent tax protest in the United States beginning in 1791 and ending in 1794 during the presidency of George Washington. The so-called "whiskey tax" was the first tax imposed on a domestic product by the newly formed federal government. The "whiskey tax" became law in 1791, and was intended to generate revenue to pay the war debt incurred during the American Revolutionary War. Farmers of the western frontier were accustomed to distilling their surplus rye, barley, wheat, corn, or fermented grain mixtures to make whiskey. These farmers resisted the tax.