The Sabaean people were the South Arabian people. Each of these peoples had regional kingdoms in ancient Yemen, with the Minaeans in the north in Wādī al-Jawf, the Sabeans on the southwestern tip, stretching from the highlands to the sea; the Qatabānians to the east of them, and the Ḥaḑramites east of them. The Sabaeans, like the other Yemenite kingdoms of the same period, were involved in the extremely lucrative spice trade, especially frankincense and myrrh. They left behind many inscriptions in the monumental ancient South Arabian script or "Musnad", as well as numerous documents in the related cursive Zabūr script.