Complex sentence: The sculptural style of the Mezcala culture may have been influenced by the Olmecs and, in turn, may have influenced the development of sculpture at the Classic period metropolis of Teotihuacan in the Valley of Mexico.
Split into simpler sentences: The sculptural style of the Mezcala culture may have been influenced by the Olmecs. In turn, it may have influenced the development of sculpture at the Classic-period metropolis of Teotihuacan in the Valley of Mexico.