Answer:
<em>Well, Your best answer will be is </em><em>D. Opportunity cost is the experience that you would have had if you had chosen your next best option. </em>
<em>Good Luck!</em>
These cash crops like tobacco were able to develop the economy in the American Colonies. They were able to bring at least 50,000 barrels each harvest. It also developed slavery in order to harvest all these crops.
The Allies gained control of the Atlantic Ocean by learning from the past and improving technology, strategies, weapons. Allies started to build large number of ships. Also people sacrificed themselves to take supplies from Canada and US to the UK. Allies developed anti-submarines weapons. Also a special group of destroyers were developed in order to set the location of U-boats.
Shipping products by railroad was much cheaper, and the cost of goods decreased
