1929- 1933 is an economic crisis. The duration is particularly long, the scope of influence is particularly wide, and the harm is particularly great. World War II was related to this.

1997, Southeast Asian economic crisis, the United States, Europe and Southeast Asian countries, as well as China and Hongkong, have been widely affected.

Now is the economic crisis in 2008.

That's all I know. The following are others'. It feels good. Since the first general economic crisis of overproduction occurred in Britain in 1825, the subsequent crisis years were 1836, 1847, 1857, 1866, 1873 and/respectively. In the period of free competition of capitalism and transition to monopoly capitalism, such economic crisis will happen almost every ten years or so. In the 20th century, after 1900 crisis and before World War II, 1907, 19 14, 192 1,1929 ~ 6544. After the war, the most prominent world economic crises were 1973 ~ 1975 and 1980 ~ 1982, both of which occurred under the background of "stagnation and expansion". The crisis in the early 1980s took on new features. It is a simultaneous economic crisis, and the time of crisis in major capitalist countries is very close. 1In July 1979, the crisis first broke out in Britain, and the industrial production in Canada declined in the same year.1In February 1980, the crisis broke out in other countries, including Belgium (February), Japan (March), the Federal Republic of Germany (April) and the Netherlands (April).