The president is responsible for the communication and ongoing relationship between america and other nationals of the world. this is know as

The communication and ongoing relationship between America and other world nations is known as Foreign Policy.  The president of the United States as head of the Executive Branch is responsible for the U.S. Foreign Policy. In order to help him with these responsibilities the US President has the Secretary of State.  This person acts as the equivalent of a Minister of Foreign affairs.  Also the U.S. Ambassadors are responsible for the diplomatic relations with each country the U.S.has relations with.  They are also part of the Foreign Policy area of the Executive Branch of Goverment ultimately led by the President of the United States.  

a. bacon

hes known as the father of   empiricism this concluding my reasonining im not 100% sure tho so only do it if u trust me ; c

social contract theory basically says that all individuals are born equal, and provided a god given right to consent to be governed. american government is based of this

thomas hobbes and john locke said that we are selfish, individualistic, and constantly at war with each other, therefore we need to be controlled. 

government is defined as the legitimate use of force to control human behavior within territorial boundaries, here comes in hobbes and locke.

hobbes takes the part about controlling human behavior. while locke takes the part of legitimate use of force, since force is not legitimate unless there is consent of the people. 

there are basically 3 goals of the government: 1) maintain order by protecting life and property. 2) providing public goods, those which are typically not provided by the public sector, such as roads and education. 3) promote equality be it political, opportunist or outcome equality.