There is no concrete evidence about the country of origin for the guitar; however, based on its design and function, it is most similar to the guitarra used in Spain. There are instruments that are similar to guitars, like the tanbur or sitar, but their differences preclude ancestral kinship.
A guitar is classified as a chordophone and is either acoustic or electric. The acoustic guitar uses taut strings that create tones when strummed or plucked, and the sound is amplified by the hollow body of the guitar. An electric guitar is attached to an amplifier that can be used to enhance tones and that amplifies the volume from the guitar.