a single customs territory defined by a common customs or common external tariff formed by merging the customs territories of several states, states which have established among themselves a single customs area with common external customs regulations and tariffs, a union of two or more independent countries to form a single customs area within which there are no customs duties or other limiting controls on trade between the member countries, common customs dut, entity formed by a Customs territory replacing two or more territories and having in its ultimate state the following characteristics: a common Customs tariff and a common or harmonized Customs legisl, kahe või enama riigi kokkulepe, millega nad rajavad ühtse tollipiirkonna