What best describes the difference between foreign policy and domestic policy?
A. Domestic policy issues affect areas within U.S. borders, while foreign policy issues affect areas outside U.S. borders.
B. Foreign policy issues affect Canada and Mexico, while domestic policy issues affect only the United States.
C. Foreign policy issues only affect the governments of other countries, while domestic policy issues only affect the United States government.
D. Domestic policy issues affect all 50 states, while foreign policy issues affect only a few states.

Foreign policy is defined as the set of public decisions made by the government of a State based on national interests and in relation to the other actors of a country's international system. It can also be defined as an area of government activity that is conceived between State relations with other factors. It is the external variable of the project that every Nation defines at a certain moment of its historical development. As an integral part of a national project that a country has, foreign policy must respond, in the first place, to the aspirations for peace and security and to the political, economic and social development needs of the country. This reflects the strength of a State, integrated as a nation, with a stable government and with a sovereignty deposited in the citizens and expressed by its representatives through the national interest.

Domestic or domestic policy. It is used in the journalistic language and in the political literature to talk about the internal decisions of a government, those that are handled only within the government, related to the administration of the country's affairs, differentiated from its foreign policy, which is which refers to the relations of the country and to its national interests and its relations with other countries and with international organizations. It is also used to designate the particular affairs of a party, social organization or corporation, or the orientations that its members have in relation to others and with respect to the general conduct of the same company or group within a country or nation.