Explain what some parts of the world were like about 800 years ago (examples could be China, the Middle East, Western Europe, Mexico, etc.)

800 years ago in China; the Genghis Khan invaded the Western Xia Dynasty in China and established the Yuan Dynasty

800 years ago in the Middle East; Sultan al-Kamil who was a brother of Saladin, offers Jerusalem to the Crusaders for ten years in return for Damietta, which the Crusaders eventually give up, in exchange for a safe retreat from the Nile Delta.

800 years ago in Western Europe; The Jews of Erfurt, Germany are massacred, after a ritual murder libel. A crowd storms the synagogue where the Jews have gathered. The threat is baptism or death. The Jewish quarter, including the synagogue, is razed; many Jews were tortured and killed.

800 years ago; The Maya of the Yucatán revolt against the rulers of Chichen Itza.

just some examples, hope i helped

la segunda guerra mundial comenzó el 1 de septiembre de 1939 y terminó el 2 de septiembre de 1945. ¡espero que esto ayude!

the right answer is the end of world war ii

after the end of a global wwii all the nations involved, in an attempt to create an organization to maintain world peace. this agreement would work settling international disputes via negotiation and arbitration instead of leading the issues escalate to another war.