Union_Europee
Commercio
Lingua_auxiliar_international
Canal_de_Suez
Organisation_Mundial_del_Commercio
Troco
Canal_de_Panama
Association_de_Nationes_del_Sud-est_Asiatic
Communitate_Sudamerican_de_Nationes
Muro_de_Berlin
Frontiera
Mercato
Mercosud
BRICS
Doana
Via_maritime