The Lend-lease scheme of 1941 changed history. In short, it ensured that no financial price can be placed upon protecting liberal democratic values.
In Part 9, I discussed the Lend-lease scheme itself.
The direct human cost of the war notwithstanding, WW2 was an economic war on a gigantic scale. At the end of 1939, the combined Gross Domestic Product (GDP) of the Allies has been calculated as 200% of the combined GDP of the Axis countries (or a ratio of 2:1 in favour of the Allies). By 1940, with many of the European Allies under Axis occupation and the USSR bound by a non-aggression pact with Germany, this ratio had shifted downwards to 1:1.6 (in slight favour to the Allies). In mid-1941, the USSR entered the war followed by the US in December. By 1945, the massive expansion of the Allied economies, and in particular the US economy, and the progressive collapse of the Axis economies, the ratio had increased dramatically in favour of the Allies – a ratio of 1:5 (meaning, the Allied economies were now five times the size of the Axis economies). The Axis countries simply were overwhelmed by the economic power of the Allies.
Thank you for sharing my exploration of the importance of the Lend-lease scheme of WW2. Without it, no amount of effort (and suffering) by millions of service personnel and civilians around the world would have brought about an Allied victory. WW2 was a titanic clash between the forces of liberal democracy and the forces of fascism. And therefore it required an equally titanic clash of economies to bring about an Allied victory. Remembering the Lend-lease scheme allows us to remember a time when the struggle of good over evil was worthy of any price being paid.
 Source: U.S. Department of State.