The Great Depression of 1929-33 was the most severe economic crisis of modern times. Millions of people lost their jobs, and many farmers and businesses were bankrupted. Industrialized nations and those supplying primary products (food and raw materials) were all affected in one way or another.
States like Oklahoma, the panhandle of Texas, Kansas, Colorado and Portions of New Mexico were devastated.
There are many countries that participate.
It's a lot to list so if you go to Maps of World 2016 Summer Olympics Participating Countries, you can see all recent countries that participated. This way you can also give credit to that site.
The name Qing means "pure" in English.
Hope this helps!
- Juju
