单选题 According to the passage, European conquerors had which of the following advantages in North America?

• (A) They possessed a larger population to replace casualties in their conquest of North America than they did in the South.
• (B) They had already gained experience in the Southern conquest that was not formerly available.
• (C) They had access to weaponry superior to that which was employed in the Southern conquest.
• (D) They were confronted by an opponent experienced in empire-building in North America.
• (E) They had better martial organization in North America than they had in South America.