The Powerhouse Protectorate CM is a common market on Kebir Blue, as defined by the Protectorate Powerhouse Trade and Defense Treaty. In real terms, it represents one of the largest economic alliances on Kebir Blue and much of the world's economy.
The Powerhouse Protectorate CM was created by the merger of membership from two seperate common markets, notably The Protectorate Union common market, and the Economic Powerhouse's own. Part of their joint trade and defence pact, this common market was created with the intention of galvanising already strong ideological links between the two federations, as well as being symbolic of the friendship that connected the two.
The specific founding date of the common market is not clear, but it is at least a century old, and still in existance.