How many centuries between ptolemy developing his geocentric theory and copernicus proving him wrong with his heliocentric theory that the earth revolves around the sun

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.

How does benjamin rush’s decision to forsake private practice as a physician and join the war effort indicate what sort of people were attracted to the revolution? this question is a 'writer question' so it does not have any options just write the answer.

Which statement best explain later a stance a conservative might take on gun control? a) there should be certain restrictions to gun ownership. b) gun control efforts violate the second amendment c) background checks should become a requirement d) the brady bill brought about needed changes