Linear A
Linear A is preceded by about a century by the Cretan hieroglyphs. It is unknown whether the language is Minoan, and its origin is debated. Although the hieroglyphs are often associated with the Egyptians, they also indicate a relationship to Mesopotamian writings. They came into use about a century before Linear A, and were used at the same time as Linear A (18th century BC; MM II). The hieroglyphs disappeared during the 17th century BC (MM III).