Two dominant features of agricultural history in the English West Indies are the formation of the plantation system and the importation of large numbers of servile labourers from diverse parts of the world—Africa, Europe and Asia. In Barbados and the Leeward Islands, the backbone of early English colonisation of the New World, large plantations developed within the first decade of settlement. The effective colonisation of these islands, St. Christopher (St. Kitts) in 1624, Barbados 1627, Nevis 1628, Montserrat and Antigua 1632, was possible because of the early emergence of large plantations which were clearly designed for large scale production, and the distribution of commodities upon the world market; they were instrumental in forging an effective and profitable agrarian culture out of the unstable frontier environment of the seventeenth century Caribbean. These plantations, therefore, preceded the emergence of the sugar industry and the general use of African slave labour; they developed during the formative years when the production of tobacco, cotton and indigo dominated land use, and utilised predominatly European indentured labour. The structure of land distribution and the nature of land tenure Systems in the pre-sugar era illustrate this. Most planters who accelerated the pace of economic growth in the late 1640's and early 1650's by the production of sugar and black slave labour, already owned substantial plantations stocked with large numbers of indentured servants.