What role did Americans' belief in Manifest Destiny play in the "closing" of the Western frontier?
A. It was used to justify the settlement of all the land
between the east and west coasts.
B. It helped them rationalize America's tendency to avoid
treaties with neighboring nations.
C. It explained why the West was so difficult to govern
and provided a solution to lawlessness.
D. It supported their aggression toward Native
Americans, who were seen as threats to security.

B. middle class

Explanation:

Malthus called entrepreneurs the ‘shock troops’ of the industrial revolution. This group of individuals whose investment helped spread the revolution were based mainly in the Midlands, a center for industrial growth. Most were middle class and well educated, and there were a substantial number of entrepreneurs from non-conformist religions like the Quakers. They have been characterized as feeling they had to be challenged, had to organize and succeed, although they ranged in size from major captains of industry to small-scale players. Many were after money, self-improvement, and success, and many were able to buy into the landowning elite with their profits.

The entrepreneurs were capitalists, financiers, works managers, merchants, and salesmen, although their role changed as the business developed and the nature of enterprise evolved. The first half of the industrial revolution saw just one individual running the companies, but as time went on shareholders and joint stock companies emerged, and management had to change to cope with specialized positions.

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