What year did the U. S join world war 1

Somebody save the ! what was greek math and science also medicine

The civil rights act that passed in 1964

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.