Why Did Increased Trade with Europeans Tend to Erode the Traditional

Why did increased trade with Europeans tend to erode the traditional leadership structure of Native American groups?

A) Native Americans looked to the Europeans as their new leaders, which caused the Native American leaders to lose much of their power.
B) Native Americans who traded with Europeans tended not to belong to traditional communities, but rather to leaderless societies.
C) Native American leaders no longer wanted to rule over other members of their groups who traded with Europeans.
D) Native American leaders spent so much time in conflict with European traders that they had no time for leadership, causing their roles to weaken.
E) Native Americans no longer consulted leaders when they bargained with European traders, which weakened the leaders' roles.