The best and most correct answer among the choices provided by the question is the fourth choice "John Hickson"
The world's population today is much larger than it has been in anytime in the history of the world, and has been continuing to grow ever since the Industrial Revolution, since this raised the living standards and increased in incomes of an enormous number of people, especially in the western world. Advances in medicine have also played a major role.
True, Chiang Kai-shek led the Nationalists while Mao Zedong led the Communists
