Growing Population had the greatest effect on growth of cities and the expansion of cities to suburbs.
the united states solution i believe was the best because they were able to keep themselves up enough to last to world war 2 when they started to increase jobs because they had to build war machines like ships and tanks ect and since they had to do it fast they had to hire more people instead of some of the other countries how lessened the value of their money such as great Britain
I’m not sure if you mean technological and economic development or just products coming out kind of development.
Well I’m not gonna write out two paragraphs but some important tech and economical developments were:
The radio became widespread. It was welcomed by the public and by 1934 almost 60% of the US had radio access. Sports events, news, dramas and more were broadcasted through the radio.
Stock markets across the west developed negatively. On Black Tuesday, stock markets crashed, sending the world into the Great Depression.
Answer: Pioneers in Wagon Caravans