USA enters WW2 in 1940 WW2 October 19, 1940 Discover how the United States began steering toward war long before Pearl Harbor drew the first headlines 🇺🇸⚔️. In 1940, as Europe burned under Nazi conquest and Britain stood alone against Hitler, the U.S. faced a pivotal choice: isolation or involvement. While officially neutral, Roosevelt maneuvered the nation closer to conflict through policies like the Lend-Lease Act, military expansion, and strategic support for Allies 💼✈️. American volunteer