Which statement is the most valid conclusion based on a
study of United States foreign policy?
(1) The United States had no involvement in foreign
affairs until the second half of the 19th century.
(2) Historically, the President has exerted the most control
in determining foreign policy.
(3) The United States has consistently refused to intervene
in the internal affairs of Central American nations.
(4) The use of the military to support foreign policy did
not occur until the 20th century.

United States foreign policy has to do with the country's interactions with other nations. However, having studied these instructions over the years, it can be concluded that "Historically, the President has exerted the most control in determining foreign policy." This is evident in the fact that:

1. The US President set the pace or mood for all foreign policy, by being the Commander in chief of US armed forces.

2. He appoints ambassador to different nations

3. Together with the congress, he can declare war.

4. He also appoints Secretary of State whose major functions is close to that of foreign ministers

Also, from George Washington, all through to present Donald Trump United States have participated in different international arrangements based on the President's ideas and perception.