The correct answer is C) Better than any other country on the planet.
The other options of the question were A) Able to be self-sufficient as a country. B) Able to teach other countries economic and political leadership. D) Protected by their military.
During the Golden Age of China, particularly during the Tang Dynasty that ruled the country from 618 to 907, the leaders decided that it was better for the country to became isolated from the rest of the world and avoid any invasions. The geography of the land facilitated this process. The Himalayas, Mount Everest, the Yellow River or the Gobi Desert, are physical barriers that impeded enemies to enter the Chinese territory.
