Answer: Government policy
Step-by-step explanation:
A firm operation in a foreign market is usually affected by uncontrollable factors in the foreign market but the most likely to affect the firm is the goverments policy on foreign firm.
A government might vary it's duties on foreign firm or it's products or a total ban on the firm operation in the foreign market.
There are others like natural disasters but the company can get information on such based on precedence of such occurrence in the foreign country or as regards forecast on such.