Origin based boundaries: Also called Genetic Political Boundaries because it has to do with the evolution of boundaries.
Pioneered by American political geographer Richard Harshorne (1899-1992)
Antecedent: Certain boundaries were delimited before the present-day human landscape was developed. Example: Border between Malaysia and Indonesia on the island of Borneo.
Subsequent: Boundary evolved as the cultural landscape of an area took shape. Example: The border between China and Vietnam was the result of a long term process of adjustment and modification.
Superimposed: Boundary that is forcibly drawn across a unified cultural landscape. Example: Island of New Guinea that separates Indonesia's West Papua from the country of Papua New Guinea.
Relic: A border that has ceased to function but whose imprints are still evident on the cultural landscape. Example: The border between former North and South Vietnam.
