A sphere of influence by a country is a foreign geographic region ("sphere") in which that country has [[Trade|trading]] or [[investment]] rights.
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A sphere of influence by a country is a foreign geographic region ("sphere") in which that country has [[Trade|trading]] or [[investment]] rights, or more broadly, political or cultural influence.
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For example, [[Britain]] enjoyed spheres of influence in many regions of the world during the 18th, 19th, and 20th centuries.
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For example, [[Britain]] enjoyed spheres of influence in many regions of the world during the 19th centuries.