How has China country's history helped shape the geography?

In ancient times, the geographic features of China isolated the country from the rest of the world. Natural barriers, such as mountains, deserts, rivers, and seas, made travel to and from China challenging. ... These features also allowed people living in different parts of China to develop their own cultures

Explanation:

d. the polar jet stream   lies between the polar easterlies and trade winds should be your answer

answer; colony;