D. They led small, surprise attacks on British troops.
Answer:
It was a popular term used during the First World War to describe the area between opposing armies and trench lines.
Explanation:
I think the answer is B and D
Adam Smith implies with his theory of the invisible hand that each person moves selfishly within the economic area, however the individual riches also benefits the rest of the population.
I think the theory speaks of the trust that people deposit in moving within their own businesses, which is a good thing.
