What is known is that in the years following Teotihuacan's fall Nahuan speakers quickly rose to power in central Mexico and expanded into areas earlier occupied by speakers of Oto-Manguean, Totonacan and Huastec. During this time Oto-Manguean groups of central Mexico such as the Chiapanec, Chorotega and Subtiaba migrated south some of them reaching the southern limits of Mesoamerica in El Salvador and Nicaragua. Also some speakers of Nahuan moved south, some settling on the coast of Oaxaca where their speech became the language Pochutec, and others moving all the way to El Salvador, becoming the ancestors of the speakers of modern Pipil.