North America is a continent in the Northern and Western Hemispheres. Bordered to the north by the Arctic Ocean, east by the Atlantic Ocean, west and south by the Pacific Ocean, and southeast by the South American and Caribbean Sea. Most common languages are English, Spanish, and French. Climates include tundra, temperate, mediterranean, continental-humid, subtropical, and desert. Economically, Canada & the US are considered wealthy and highly developed with the rest in various stages. North america is ethnically diverse. Christianity is the predominate religion, with significant Atheist, Jews, Muslims, and Buddhists. Transportation is mainly by personal vehicle with trains, buses, and subways available in certain cities and for certain routes.