Cumulation is the relationship between different FTAs regarding the rules of origin – sometimes different FTAs supplement each other, in other cases there is no cross-cumulation between the FTAs. A free-trade area is a result of a free-trade agreement (a form of trade pact) between two or more countries. Free-trade areas and agreements (FTAs) are cascadable to some degree – if some countries sign agreements to form a free-trade area and choose to negotiate together (either as a trade bloc or as a forum of individual members of their FTA) another free-trade agreement with another country (or countries) – then the new FTA will consist of the old FTA plus the new country (or countries).