The Great Link was the intermingling of many Changelings in their natural liquid form, forming the ruling body of the Dominion. (DS9: "The Search, Part II") As the home of the Founders, the Link was effectively the "capital" of the Dominion. In 1879, the Great Link launched a Dominion attack against a group of El Aurian transport ships who attempted to colonize near their homeworld. This prompted a young shapeshifter to leave the Link and live among the solids in the Alpha Quadrant. (Star Trek: Phoenix-X: "The Links' Traitor")