After World War I, many countries’ money was worth much less than before the war and food and fuel prices rose dramatically. This phenomenon is called:

Inflation I think

Explanation:

The interwar period in the United States, and in the rest of the world, is a most interesting era. The decade of the 1930s marks the most severe depression in our history and ushered in sweeping changes in the role of government. Economists and historians have rightly given much attention to that decade. However, with all of this concern about the growing and developing role of government in economic activity in the 1930s, the decade of the 1920s often tends to get overlooked. This is unfortunate because the 1920s are a period of vigorous, vital economic growth. It marks the first truly modern decade and dramatic economic developments are found in those years. There is a rapid adoption of the automobile to the detriment of passenger rail travel.

Hope this helps if not then sorry about that!

And also can i have Brainlist? :-:

answer: it b

explanation:

cuz l   said so