答案優(yōu)選Canada is a country occupying most of northern North America, extending from the Atlantic Ocean in the east to the Pacific Ocean in the west and northward into the Arctic Ocean. It is the world's second largest country by total area and shares land borders with the United States to the south and northwest.The land occupied by Canada was inhabited for millennia by various groups of aboriginal people. Beginning in the late 15th century, British and French expeditions explored, and later settled along, the Atlantic coast. France ceded nearly all of its colonies in North America in 1763 after the Seven Years' War.