<span>The mountains and deserts in western and southwestern China slowed the exchange of ideas</span>
The correct answer is letter C. William J. Levitt was one of the pioneers of suburban home-building. He was an American real-estate developer widely known as the father of modern American Suburbia and is one of the most influential people of the 20th century. He was the president of the company Levitt & Sons.
Constrained i hope this helps :)
Is it 4 decent sleeping conditions
