The answer is A= people electing representatives to decide for them
American imperialism was done in the wake of a want of industrial boom.
Explanation:
IT is a repetitive pattern that countries often embark on imperialism when they have bustling industries and trade routes along with a good level of production but have bad living conditions for the people and are looking to increase their lifestyle value.
This is what happened in the late 19th century US which had prosperous businessmen but the common people were living lives in harsh conditions and had to suffer.
So, the people had an avenue in imperialism to have more profits and to extract the profits to improve their own lifestyles at home and this need made the backdrop of imperialism.
I believe the answer is: A.Smith knew that the invisible hand of the market was not concerned with the health of the laborer.
The power of invisible hand in the market only care about the power of supply and demand which would determine who will obtain the most wealth. Even if the process could disregard the wellness of many people, as long as the demand is met, consumers wouldn't put too much thought on the laborers.