Complex sentence: He undertook expeditions in the Sinai for turquoise, in Upper Egypt for amethyst and to the Land of Punt and maintained trade relation with Byblos as well as the Egyptian presence in Nubia.
Split into simpler sentences: He undertook expeditions in the Sinai for turquoise, in Upper Egypt for amethyst and to the Land of Punt. He also maintained trade relations with Byblos as well as the Egyptian presence in Nubia.