Which of the following was not a president during the early 19th century

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.

Which best describes the connection between a mechanical loom and a cotton gin

What was one striking development of the golden age of prehistory?