Original: Geopolitics of the World System ( ISBN 0847699072 ) all of Panama -- including the segment east of the Panama Canal in the isthmus -- is typically included in North America alone '' Americas '' Standard Country and Area Codes Classifications ( M49 ) , United Nations Statistics Division '' North America '' Atlas of CanadaNorth America Atlas National Geographic and among the countries of Central America .
Simplified: Geopolitics of the World System ( ISBN 0847699072 ) all of Panama -- including the part east of the Panama Canal in the isthmus -- is usually included in North America alone .