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The Western Hemisphere, is a geographical term for the half of the Earth that lies west of the Prime Meridian, the other half being the Eastern Hemisphere. Less properly, it can refer to the Americas and associated islands and waters (or the New World), while excluding other territories that lie geographically in the hemisphere (parts of Africa, Europe, Antarctica, and Asia). "Western hemisphere" is sometimes used as an equivalent for the geopolitical construct, the "Western World", which typically includes the Americas and Western Europe.