What were some differences with Germany and the USA around the 1920's?

Answer 1

USA
The 1920s era went by such names as the Jazz Age, the Age of Intolerance, and the Age of Wonderful Nonsense. Under any moniker, the era embodied the beginning of modern America. Numerous Americans felt buoyed up following World War I (1914-1918). America had survived a deadly worldwide influenza epidemic (1918). The new decade would be a time of change for everyone — not all of it good.

Germany
In the early 1920s Germany experienced one of the most severe inflations of all time.1 The inflation was not apparent in 1920, but began showing up in 1921. Thereafter it got steadily worse until it came to an abrupt halt at the end of 1923. At its worst in the second half of 1923, prices rose more than fivefold each week. During 1920 and early in 1921 the signs of inflation were mixed. The price of food was increasing, but the price of dollars in terms of marks (the mark was the name of the German currency) was dropping, and so were the prices of products bought from the United States. However, the signs of inflation were unmistakable in the next year, from mid 1921 to mid 1922. In this period prices increased about sixfold--that is, it took six marks at the end of the period to buy what one mark would have bought at the beginning. But this rapid inflation, greater than any yearly inflation in the history of the United States, was only a prelude for what was to happen.

Answer 2

Both countries had problems caused by World War I. Both countries had severe agricutural problems caused by soil erosion and poor farming practices. Both countries were leaders in technology.
Germany built a war machine and threatened neighboring countries. They also started to persecute minorities.
The USA was for peace and isolation. They also were working on improving race relations.