Large scale manufacturing of the 1920s made overproduction. which was seemingly one of a few reasons for the Great Depression of the 19305.[30] Following the Great Depression, nancial development continued, helped with part by expanded interest for existing labor and products, like cars, phones, radios. power and home devices. New labor and products included TV, cooling and business ying {after 1950), encouraging sufcient new interest to settle the work week.[31] The structure of parkway foundations likewise added to post World War II development, as did capital interests in assembling and substance industries.[32] The post World War II economy additionally proted from the revelation of immense measures of oil all over the planet, especially in the Middle East. By John W. Kendrick's gauge. 3/4 of expansion in U.5. per capita GDP from 1889 to 1957 was expected to expanded productivity.[14]