And the election of 1848 the major parties were forced to take stand on slavery because of
a. the rise of the republican party
b. the rise of free soil party
c. the rise of american party
d. the rise of the wing party

I think it is B. the rise of Free Soil Party,

sorry if I'm wrong.

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.