The coast of the Laptev Sea was inhabited for ages by the native peoples of northern Siberia such as Yukaghirs and Chuvans (sub-tribe of Yukaghirs). Those tribes were engaged in fishing, hunting and reindeer husbandry, as reindeer sleds were essential for transportation and hunting. They were joined and absorbed by Evens and Evenks around the 2nd century and later, between 9th and 15th centuries, by much more numerous Yakuts. All those tribes moved north from the Baikal Lake area avoiding confrontations with Mongols. Whereas they all practiced shamanism, they spoke different languages.