Could i have help on these two very short multiple choice questions on christianity?

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.

What was the national government’s biggest concern is facing a war under the articles of confederation

The mongols were descendants of a. pastoral nomadic tribes b. tibetan tribes c. shang nobility