Text A Brief Introduction to Canada Geography and Climate Canada occupies a major northern portion of North America,s sharing land borders with the contiguous the 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 the largest on the continent. In northwestern Canada,the Mackenzie River flows from the Great Slave Lake to the Arctic Ocean. A tributary of the Mackenzie is the South Nahanni River[1],which is home to Virginia Falls,a waterfall about twice as high as Niagara Falls[21.A Brief Introduction to Canada Geography and Climate Canada occupies a major northern portion of North America, sharing land borders with the contiguous the 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 the largest on the continent. In northwestern Canada, the Mackenzie River flows from the Great Slave Lake to the Arctic Ocean. A tributary of the Mackenzie is the South Nahanni River[1], which is home to Virginia Falls, a waterfall about twice as high as Niagara Falls[2]