How would crime and immigration develop within the United States without the world wars? Could we see higher or lower crime rates? Will immigration to America increased, decreased, or be restricted by the government. Will America have less of a social safety net in this world? How would that impact the previous questions asked?
Without the world wars we have
1) no red scare, so anti immigration laws would be delayed
2) the American socialist party would have a good boost
3) the federal government wouldn't grow as much as it did without the first world War
4) the great depression is definitely delayed
5) the great migration of African Americans to the north is delayed, possibly forever. So we have a lot of unfrenchised black people in the south, and keep in mind that mechanization of agriculture is coming very fast
6) without the world Wars many European countries would develop much quicker, so italians would stop arriving by the 40s at the latest, and eastern Europeans not much later
7) this means more catholics, jews and orthodox in the US
8) possibly an escalation of American military presence in Mexico
9) in general the United States would remain much more geopolitically focused on central America and Eastern Asia. For central America this might mean a general higher standard of living, diminishing the immigration rates of those countries to the US
10) virtually no immigration to the US from Korea or Vietnam, and no war brides
11) probably no nation wide ban on prohibition, but the perceived failure of prohibition weakened the movement, so it might make it stronger overall
12) depending on how things go in China, a war with Japan is a possibility. If Russia doesn't do it first
13) organized crime would still be present, but it would be much less organized and powerful
14) no idea on how the Jim crow situation might develop
15) the us would spend much less money on defence, but probably the us navy is still going to be as powerful as the royal navy. Battleships are still dead by 1940 IMO