Three sons of American servicemen based in Britain formed this group in 1969 (reduced to a duo in 1977) so perhaps that explains the rather grand group name that they chose. Given all the great music that is recorded in the United States, any group that choose the name America has a lot to live up to.
In the event, America did well in America, with two number one hits (A horse with no name, Sister golden hair) and several top ten hits including I need you, Ventura highway, Tin man, Lonely people and You can do magic - this last song was their only significant success after Dan Peek left in 1977. America were less successful in Britain, where they had only three hits, two of which were minor although they made the top three with A horse with no name. Their other notable songs include Muskrat love (also recorded by Captain and Tennille) and Sandman.
Overall, America's style of soft-rock harmony music owed a lot to Crosby, Stills, Nash and Young although they were more successful on the singles chart than that illustrious group (with or without Neil Young).
For most people, this is the definitive collection of their music, containing all the tracks that they are famous for and some other great songs that might encourage some to explore their music in greater depth. If you only ever buy one collection of America's music, this is a good one to choose.