What did the war revenue act of 1917 establish?

The War Revenue Act of 1917 established a significant expansion of federal taxation to help fund the United States' involvement in World War I. It introduced new taxes, including an income tax increase and excise taxes on various goods and services. The act aimed to generate additional revenue to support military expenses and other war-related costs, reflecting the government's need to finance its wartime efforts. Overall, it marked a shift towards a more progressive tax system in the U.S. during a time of national crisis.