After the destruction of the last remaining independent Armenian states in the Middle Ages, the nobility disintegrated, leaving Armenian society composed of a mass of peasants plus a middle class who were either craftsmen or merchants. Such Armenians were to be found in most towns of Transcaucasia; indeed, at the beginning of the 19th century they formed the majority of the population in cities such as Tbilisi. Armenian merchants conducted their trade across the world and many had set up base within Russia.