Ancient Near East
It is believed that the history of the guitar began in the ancient Near East. There, the archeologists found instruments and representations of them that served as landmarks or guideposts in the relatively uncharted territory of the guitar's beginning.
Among the artifacts excavated from Babylonia, the most relevant were the clay plaques dated (1900-1800 BC). These showed nude figures playing musical instruments, some of which bear a general resemblance to the guitar. Close examination of the instrument on the plaque shows it to have a distinctly differentiated body and neck. Its back is undoubtedly flat; the manner in which it rests against the priest's chest precludes the possibility of its being bowl-shaped. It is clear that the right hand pluck the strings. The number of strings is unfortunately not clear but on another plaque, at least two strings are shown on the instrument. Evidence of guitar-like instruments has been noted in Assyria, Susa (an ancient city north of the Persian Gulf: capital of the Persian Empire), and Luristan.
Egypt and Rome
In the earliest days, the only plucked string instrument in Egypt was the bow-shaped harp. Later, a necked instrument with carefully marked frets, probably made of gut, wound about the neck. Eventually, some of the features and characteristics would combine in a later instrument, one would be the predecessor not only of the guitar but of all necked string instruments, both plucked and bowed. Further developments made this instrument even more similar in form to the guitar. The instrument from the Roman period (30 BC - 400 AD) is made entirely of wood. The rawhide soundboard is replaced with wood on which five groups of small sound holes are visible. This arrangement persisted up to the 16th century. On an instrument found in Coptic tomb in Egypt, the curves along the sides are already quite deep and the basic guitar shape is apparent. The back has become completely flat instead of it curving upward to meet the soundboard, the two surfaces are now attached to each other by strips of wood that form the sides of the soundbox. These features remain to the present day.