At the same time, the United States was providing its allies in Great Britain and the Soviet Union with critically needed supplies.
To achieve increases like this, defense spending jumped from $1.5 billion in 1940 to $81.5 billion in 1945. By 1944 America led the world in arms production, making more than enough to fill its military needs. At the same time, the United States was providing its allies in Great Britain and the Soviet Union with critically needed supplies.