Lake Champlain (French: lac Champlain) is a natural, freshwater lake in North America, located mainly within the borders of the United States (states of Vermont and New York) but partially situated across the Canada-United States border in the Canadian province of Quebec.The New York portion of the Champlain Valley includes the eastern portions of Clinton County and Essex County.The cities of Plattsburgh and Burlington are to the north and the village of Ticonderoga in the southern part of the region. The Quebec portion is located in the regional county municipalities of Le Haut-Richelieu and Brome-Missisquoi.Lake_Champlain (Wikipedia).
In the early sixteenth century, the St. Lawrence Iroquois, the Mohawk Iroquois, the Mahican, and the Western Abenaki peacefully occupied the Champlain Valley.<br. French and British Military Conflict (1664-1763): the Champlain Valley witnessed a continuous struggle between the French and British Empires for control of Lake Champlain and its tributaries. These water routes were strategic highways that provided access into the interior of the Northeast in a period when the only viable means of transportation in a rugged land was by water. Expeditions and forts were continually raised in defense of rival claims of the Champlain Valley and its waterways. Armies and war parties transported themselves on Lake Champlain in fleets of canoes, bateaux, radeaux, row galleys, schooners, and sloops. This period came to an end after the French and Indian War, when Britain assumed control of most of France's territorial claims in North America. 
Revolutionary War (1775-1783)Rebellion Comes to the Champlain Valley and Lake Champlain became a critical strategic arena