The interstate highway system was authorized be the federal aid highway act of 1956 for the primary purpose of

the answer you are looking for is letter c. he supported the idea of a un-run war in serbia to bring peace to the area.

supporting this idea was an important step that bill clinton took in order to attempt to secure bosnia and keep the peace there. he led peace reconciliations -known as the dayton agreement- leaving bosnia as a single state made up of two parts with one central government.

c. free trade can lead to low pay for workers in poorer countries.