The Great Lakes (sometimes, Laurentian Great Lakes) are a series of interconnected freshwater lakes located in northeastern North America, on the Canada–United States border, which connect to the Atlantic Ocean through the Saint Lawrence Seaway. Consis

The Appalachian Mountains, often called the Appalachians, are a system of mountains in eastern North America. The Appalachians first formed roughly 480 million years ago during the Ordovician Period and once reached elevations similar to those of the

A cordillera is an extensive chain of mountains or mountain ranges. The term derives from the Spanishcordilla, a diminutive of cuerda, or "cord". It is most commonly used in the field of physical geography. The term is particularly applied to the vario

California is a state located on the West Coast of the United States. It is the most populous U.S. state, home to one out of eight Americans (38 million people), and is the third largest state by area (after Alaska and Texas). California is bordered by Or