It's kind of a matter of definition, whether WW2 actually did end the Great Depression: things were a lot better in 1938 than in 1932. But certainly things weren't as great in 1938 as they had been in 1928. And for that matter, things weren't as great in 1945 as they had been in 1928.
These questions notwithstanding, it is a popular claim that WW2 ended the Great Depression. For this diary, we will go with that.
It seems to be canon that WW2 ended the Great Depression, but it's never explained WHY, as if it's obvious that dead enemies translates universally to greater GDP.
Many of Franklin Roosevelt's reforms related to infrastructure: his Public Highway System enabled folks to travel, the Tennessee Valley Authority and Hoover Dam provided people a utility many people hadn't known they'd needed. Many water systems were built, and some cities got public transit systems.
The problem was that in 1938, people had gotten used to living in the squalor and poverty. They were unexcited to learn that electricity was now available in their communities.
WW2 created a tremendous market for goods THAT WERE PURCHASED BY THE GOVERNMENT. Conservatives like to trumpet that WW2 ended the great depression, without seeing that the reason WW2 ended the Great Depression is that people all over the country were making food, making gadgets, making clothes (for the troops) that were then PAID FOR BY THE GOVERNMENT. It's not news to anyone on this site about the GOP being full of sh*t, but this takes their lack of curiosity to the level of stupidity.