Early Settlement By Europeans
  By the early 1600s, the French had explored the forests around the St. Lawrence Valley and had begun to exploit the area for furs. The first area of the lakes to be visited by Europeans was Georgian Bay, reached via the Ottawa River and Lake Nipissing by the explorer Samuel de Champlain or perhaps Étienne BrulÉ, one of Champlain's scouts, in 1615. To the south and east, the Dutch and English began to settle on the eastern seaboard of what is now the United States. Although a confederacy of five Indian nations confined European settlement to the area east of the Appalachians, the French were able to establish bases in the lower St. Lawrence Valley. This enabled them to penetrate into the heart of the continent via the Ottawa River. In 1670, the French built the first of a chain of Great Lakes forts to protect the fur trade near the Mission of St. Ignace at the Straits of Mackinac. In 1673, Fort Frontenac, on the present site of Kingston, Ontario, became the first fort on the lower lakes.
Coronelli's 1688 Map of Western New France
. The first printed map to show the Great Lakes in their entirety and the most accurate general portrayal of the lakes and tributaries in the 17th century.

Through the 17th century precious furs were transported to Hochelaga (Montreal) on the Great Lakes routes, but no permanent European settlements were maintained except at Forts Frontenac, Michilimackinac and Niagara. After Fort Oswego was established on the south shore of Lake Ontario by the British in 1727, settlement was encouraged in the Mohawk and other valleys leading toward the lakes. A showdown between the British and the French for control of the Great Lakes ended with the British capture of Quebec in 1759.
The British maintained control of the Great Lakes during the American Revolution and, at the close of the conflict, the Great Lakes became the boundary between the new U.S. republic and what remained of British North America. The British granted land to the Loyalists who fled the former New England colonies to Upper and Lower Canada, now the southern regions of the provinces of Ontario and Quebec, respectively. Between 1792 and 1800 the population of Upper Canada increased from 20,000 to 60,000. The new American government also moved to develop the Great Lakes region with the passage by Congress of the Ordinance of 1787. This legislation covered everything from land sale to provisions for statehood for the Northwest Territory, the area between the Great Lakes and the Ohio River west of Pennsylvania.
The final military challenge for the wealth of the Great Lakes region came with the War of 1812. For the Americans, the war was about the expansion into, and development of, the area around the lakes. For the British, it meant the defense of its remaining imperial holdings in North America. The war proved to be a short one - only 2 years - but final. When the shooting was over both the Americans and the British claimed victory.
Canada had survived invasion and was set on an inevitable course to nationhood. The new American nation had failed to conquer Upper Canada but gained needed national confidence and prestige. Native people, who had become involved in the war in order to secure a homeland, did not share in the victory. The winners in the War of 1812 were those who dreamed of settling the Great Lakes region. The long-awaited development of the area from a beautiful, almost uninhabited wilderness into a home and workplace for millions began in earnest.