The topic is very controversial because there are several viewpoints.
Some people believe that Mexican immigration has become extremely high, and that it must be somehow restricted. Other people may argue that some Mexicans work jobs that most other people would not want to do. Some of these include working on farms or other dirty jobs.
These opposing viewpoints cause the topic of Mexican immigration to be highly controversial.
B. China's huge population. <span>The central idea behind the Great Leap was that rapid development of China's agricultural and industrial sectors should take place in parallel. The hope was to industrialize by making use of the massive supply of cheap labor and avoid having to import heavy machinery. </span>
