Under Kublai Khan the Mongol empire reached its largest extension. He ruled over 24000000 km² (nearly 10000000 mi²). The empire went from China and Korea to Iran and southern Russia, from the Korean peninsula to the Danube River.
During Kublai's reign the empire was divided into four smaller Kanatos but he still remained as the Great Khan of all of them. He was actually the first Khan to successfully conquest China in 1279, making him the first Yuan ruler of the whole China. After his death, the mongols didn't elect a new Khan and the Kanatos became more independent.
Answer:
Article 2
Explanation:
The main focus of Article II is the Executive Branch and its role in U.S. government, this portion of the document states the main functions of the Executive Branch, its set up and limitations.
Since we don't have the available answers, let's see what were the <u>main causes</u> of the Dust Bowl devastation:
I) Mechanization of agricultural operations. Because of World War I efforts food production had to grow which increased wheat prices. This caused an enormous increase in the size of farms and in the rhythm and size of their crops that weren't accompanied by adequate care of the soil.
II) Farming in the Great Plains. Because of several federal land acts since the 19th century, many farmers were settling in the plains believing rain would come once farming started. This and the belief in Manifest Destiny made people farm in regions where irrigation couldn't reach.
III) The Great Depression. In order to compensate for the decreasing wheat prices, farmers tried to plow up even more land and harvest bigger crops. This led to the plowing of native grassland that kept the soil stable.
IV) Drought. In 1931 started a drought caused by a lack of rain that would end only in 1939. This killed the crops and left the soil exposed. Without grassland and with the winds the soil was blown away in dust storms.
The correct answer to this open question is the following.
Although there are no options attached, migration chains affect the immigration patterns or numbers of immigrants entering the country in that they increase the number of immigrants that try to enter the United States, trying to find better living opportunities or are escaping from political persecution in their respective countries.
A migration chain is a pattern that develops in the site where immigrants are established and form their communities. These former immigrants receive others that are coming and welcome them. So they keep their religion. traditions, customs, history, and culture, trying to form a tight bond, and not accepting the American culture. That is why in large American cities such as Chicago, Nee York, Miami, or Los Angeles, you can find ghettos or large Italian, Chinese, Korean, Mexican, Cuban, or Puerto Rican neighborhoods.