Dependency theory
Other anthropologists, such as Peter Vayda and Roy Rappaport, have gone on to build or respond to work done by White and Steward, such as developing theories of cultural ecology and ecological anthropology. By the late 1950s, students of Steward such as Eric Wolf and Sidney Mintz turned away from cultural ecology to Marxism, World Systems Theory, Dependency theory and Marvin Harris's cultural materialism.