Why was
Operation
Overlord (D-Day)
so important?

The D-Day military invasion that helped to end World War II was one the most ambitious and consequential military campaigns in human history. In its strategy and scope—and its enormous stakes for the future of the free world—historians regard it among the greatest military achievements ever

Explanation:

when a country suffers, for example, a drought period, the market product is affected for a low offer, in this case, potatoes; the government has to tax to the households, which have to give more money for the potatoes which they consume, that situation make them consume substitute goods even through loans, it could increase the financial market movement and the inflationary phenomena, the business has to increase salaries in order to the employees could buy a more expensive food (potatoes) and in order to inflation tha business had to buy expensive supplies in the factor market, while the rest of the world have to gain more money to consume the same amount of potatoes.

a. favoring native born americans over immigrants.