Chords and words for horse with no name can be found herehttp://www.guitarnotes.com/tabs/
"America" originated in England but the bandmates were US citizens, Airforce Brats who met on and airbase where their parents were stationed. I bought their greatest hits album at 16 stopped playing it at 17.
Horse with no Name was their breakout hit and on it they seem to be parodying out of Neil Young. But as someone pointed out it is not a great parody because of the backs lack of vocal infirmities. I imagine a later day Sam Phillips in some studio in England in 1970 thinking "If I only had a Neil Young who could actually sing."