What two wars fought in europe and asia where the "declared wars"?

What pact signed on 1949 reinforce that the united states would not return to an isolationist policy

The ideas contained in the declaration of independence was most influenced by a. absolute monarchy b. the federal system c. anti-authoritarianism d. the social contract theory

Which of the following world and national events led to a new view of people with disabilities in the us:     a.  world war i and ii veterans with disabilities returned home after the wars.b.  john f. kennedy was elected president and had a sister with a disability.c.  the civil rights and feminist movements.d.  all of the above.