It was occupied by Japan from 1915 to 1945.
Temperature, food, pollutants, population density, sound, light, and parasites.
Towns and cities next to military and industrial facilities grew and had an increase in the economy. California's population in 1940 was 6,907,387 and by 1950 it had grown to 10,586,223, a 53.3% increase. California received one eighth of all war orders.
53.3