During the reign of king Bareeds II the guild reached an agreement with Calpheon while the Mediahn state remained neutral to the conflict. Mediah would supply the alliance with weaponry and armor at a discount in exchange for Black Stones, which Shen claimed were ideal for the production process. Calpheon, clueless about the value of the stones, gladly accepted. Using the lava caves as a natural furnace, Mediah was able to not only increase production of weaponry for Calpheon at a higher rate than Calpheon was able to supply itself, but also to melt the Black Stones.
Around that time delegations from Valencia arrived to meet with guild officials. They demanded the Black Stones that Mediah was provided by Calpheon. Mediah agreed to give back a share of its Black Stones in exchange for exclusive trading rights with Valencia. As a result of the agreements with both Calpheon and Valencia, Mediah, through the Shen Merchant Guild, began to prosper greatly.
Nowadays the state itself could be said to be an extension of the Shen Merchant Guild.