What did the US do to assist Great Britain and her allies before we joined World War 2?

Before officially joining World War II, the United States assisted Great Britain and its allies primarily through the Lend-Lease Act, enacted in March 1941. This program allowed the U.S. to supply military equipment, food, and other resources to nations fighting against the Axis powers, bolstering their defenses. Additionally, the U.S. provided financial support and intelligence sharing, while also engaging in naval patrols to protect shipping routes against German U-boats in the Atlantic.