northern portion of North America, sharing land borders with
the contiguous United States to the south and the U.S. state of Alaska to the northwest, stretching from the Atlantic Ocean in the east to the Pacific Ocean in the west; to the north lies the Arctic Ocean. By total area (including its waters), Canada is the second largest country in the world—after Russia—and largest on the continent. By land area, it ranks second.The population density, 3.5 inhabitants per square kilometre (9.1/sq mi), is among the lowest in the world