One important impact of the mongol expansion across asia and europe was the

Increased trading activities

Explanation:

The Mongol invasion was the victory over the Europe by the Mongol empire and this led to a great economic improvement in this region. There was increased trading activities across the Asia and Europe after the ninvasion.

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.

"they had a large area of land that they owned."