Answer:
b)In the short term, unemployment rates would drop drastically.
Explanation:
<span>Legal contracts provide incentives for people to exchange goods and services by allowing fair trade and consequences to come into effect if one party doesn't meet the legality of the contract. Both parties of the exchange are given guidelines to follow as well as the rewards and ramifications of certain actions </span>
A Trade barrier are laws that limits free trades between countries or nations, An Embargo are type of laws that specifically cuts off trades, it may be import or export into specific countries. Either of these answers fit your question.
There was both guerilla warfare and trench warfare in this global war