What were reasons for nullification??

The argument behind nullification is that the States—as parties to the compact that created the federal government—have a right to interpret the Constitution and veto acts where the federal government exceeds its delegated power.

Explanation:

I don't have an explanation

assuming that by westerners you mean americans. that they were mean and controlling and abusive to its peasants.

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.