The correct answer is D. population distribution
Places with low sea level and lots of rivers and fertile soil will always have more citizens than places located on tall mountains with cold rocks and nothing else.
He is referred to as the "Father of the Nation" in the Republic of China due to his role in the overthrow of the Qing dynasty during the Xinhai Revolution.
Sun remains a unique figure among 20th-century Chinese leaders for being widely revered in both mainland China and Taiwan.