Canada, a country in North America consisting of 10 provinces and 3 territories. Located in the northern part of the continent, it extends from the Atlantic to the Pacific and northward into the Arctic Ocean. At 9.98 million square kilometres in total, Canada is the world's second-largest country by total area, and its common border with the United States is the world's longest land border shared by the same two countries. The land that is now Canada has been inhabited for millennia by various Aboriginal peoples. Beginning in the late 15th century, British and French colonial expeditions explored, and later settled, the region's Atlantic coast. France ceded nearly all of its colonies in North America to the United Kingdom in 1763 after the French and Indian War: the Seven Years' War's theatre of war in North America. The population grew steadily in subsequent decades, the territory was explored and additional self-governing Crown colonies were established.