The seventeenth- and eighteenth-century Nguyen kingdom was known as Da
ng Trong to Vietnamese, and Cochinchina by the Westerners. In just 200
years it won control over three-fifths of the territory in modern Vie
tnam. The experiences of this expanding southern frontier area seem to
suggest an image of Vietnam that is very different from the north, op
ening a door to an alternative world in which diversity was tolerated,
and indeed exploited, for Vietnam's own development.