It was the "oil crisis" that was one major cause of the recession in the United States in the 1970s, since many countries in the Middle East cut prices to manipulate prices. This put a focus on alternative energy sources that continues today.
The Treaty of Versailles was a peace treaty that ended WW1 (between Germany and allies)
The losses in the Middle East were staggering: the war not only ravaged the land and decimated armies, it destroyed whole societies and economies. In this way, the experience of World War I in the Middle East is perhaps more akin to the experience of World War II in Europe.
C. Soviet forces invaded South Korea
