Limits on the quantity or total value of specific products imported to a nation are?

Question

1-import quotas
2-protective tariffs
3-nontariff barriers
4-export subsidies

Answer 1

1-import quotas

Answer 2

import quotas - it's a method of balancing trade in different commodities, particularly suited to prevent dumping by a foriegn provider causeing a plunge in the market price charged for an item, attempting to balance competition, showing no favoritism to either party. indexes are privided by us custom services on items imported, these , under current trade laws and treatys figures are balanced by indices provided by export controls