As European influence expanded in insular Southeast Asia throughout the early modern era, colonial interests
shifted from maintaining favorable trade zones along the coasts and rivers to an increasing control of territory and
its human populations. The island of Borneo entered the colonial ambit relatively late in this
process,Graham Irwin, Nineteenth-Century Borneo: A Study in Diplomatic
Rivalry (s-Gravenhage: Martinus Nijhoff, 1955). but its eventual division between British and Dutch
spheres of influence and control has had profound consequences for the peoples that fell under either. There
and elsewhere, territorial boundaries sliced across well-established networks of communication, trade, common
traditions, and strong ties of kinship. These boundaries came to impose different symbols of formal status on people from
the same ethnic groups. From the colonial perspective, boundaries were designed to function negatively, to restrict
what was deemed illegal such as smuggling and migration, and positively, to promote legitimate
activities like taxation and road construction. The usual colonial attitude was that borders should be precisely
defined, clearly demarcated, jealously guarded, and exclusive. A. I. Asiwaju, ‘The Conceptual Framework’, in A. I. Asiwaju (ed.), Partitioned
Africans: Ethnic Relations Across Africa's International Boundaries, 1884-1984 (London: C. Hurst and Co.,
1985), pp. 1-18 at pp. 2-3; A. I. Asiwaju, Borderlands Research: A Comparative Perspective. Border
Perspectives Paper No. 6 (El Paso: University of Texas, Center for Inter-American and Border Studies, 1983), pp. 2-3;
S. Whittemore Boggs, International Boundaries: A Study of Boundary Functions and Problems (New York:
Columbia University Press, 1940), pp. 10-11. Yet the people so partitioned routinely defied the border
divisions, causing no small amount of worry to the colonial states.