ABSTRACTIn this article, we respond to an article by Jeffrey Fleisher et al. (2015) in which they pose the question: When did the Swahili become maritime? We draw from our research findings in coastal and inland Eastern Africa to show that inland African societies were an essential component in the development of Swahili urbanism and maritimity. To understand change in any part of the East African coast requires understanding the entire context of economic, political, and social interaction across the diverse dimensions of this society. By excluding inland Eastern Africa from their analysis, Fleisher et al. omit the interactions between land and sea that were the basis of this society's development. We conclude that Swahili society resulted from intercommunity interaction, socioeconomic networks, and exploitation of diverse regional resources. [trade, maritime, mosaics, urbanism, Swahili]
Between 300 BCE and 1800 CE, Indian Ocean commerce was managed by traders who bridged exchange networks across the edges and peripheries of empires and interaction spheres through trader alliance networks (TAN). Using Network Theory, we hypothesize that TAN were characterized by high Triadic Closure and relatively little political influence between 300 BCE–1400 CE, and shifted to Brokerage and high political influence after 1400 CE. These shifts and their impacts are tested through archaeological data from the Indian Ocean ports of Chaul, India, and Mtwapa, Kenya. These shifts enable understanding the emergence and impact of trader lobbies, pressure groups, and 'Great Firms' as global power brokers, and the rise of Predatory Commerce after 1600 CE that continues to this date.