In granting or gaining of civil rights to or by many groups in America, what were the 3 most important? Why were they the most important?

This seems to be an opinion question which only you can answer -- and then give an explanation about WHY you believe each was most important.

http://www.google.com/search?q=gaining+civil+rights&ie=utf-8&oe=utf-8&aq=t&rls=org.mozilla:en-US:official&client=firefox-a

http://www.google.com/search?q=granting+civil+rights&ie=utf-8&oe=utf-8&aq=t&rls=org.mozilla:en-US:official&client=firefox-a