From the very first Native American occupation of this region, people have been using Lake Champlain for sustenance, warfare, commerce, transportation, and now recreation. It lies between the Adirondacks to the west and the Green Mountains to the east. Military control of the lake meant control of the surrounding regions. Later the lake was used for commercial purposes, shipping goods and products north into Canada and south to the Hudson River. Learn more about these key moments in Lake Champlain History.