How did lend lease act involvement in the war?

The Lend-Lease Act, enacted by the United States in March 1941, allowed the U.S. to supply Allied nations, particularly the United Kingdom and later the Soviet Union, with military equipment and supplies without immediate payment. This program significantly bolstered the Allies' war efforts against the Axis powers by providing essential resources such as weapons, vehicles, and food. By facilitating this support, the Lend-Lease Act helped sustain the military capabilities of the Allies, ultimately contributing to their victory in World War II. It also marked a shift in U.S. foreign policy from isolationism to active involvement in the conflict.