A Brief History
On March 11, 1941, President Franklin D. Roosevelt signed the Lend-Lease Act that allowed him to let American factories become “The Arsenal of Democracy” and equip the country’s Allies with American-built war materials.
Digging Deeper
This could be done on an enormous scale since U.S. wartime production was unhindered by fighting within its own borders and because all raw materials could be easily obtained (unlike in Germany and Japan).
Among the major weapon systems provided to the Allies, mainly the Soviet Union, was one of the most under-appreciated fighter aircraft of World War II, the Bell P-39 Airacobra. Sleek and lethal looking, this plane certainly followed the aviator’s axiom that if it looks like it would fly well, it probably will.