What contributed to the prosperity for the middle class during the two decadesfollowing World War II

Near the end of World War ll, Congress passed the GI Bill which allowed returning soldiers to go to college and attain affordable home loans, among other things. So, when soldiers came back home they took advantage of this and bought homes in the up and coming suburbs that were home to the majority of the middle class. Also, people were just dying to spend their money on various new products and appliances after the penny pinching and rationing years of the Great Depression and World War ll.