Antecedent
The boundary of the Pyranees Mountains established between Spain and France
Subsequent (Ethnographic)
The boundary between Northern Ireland (part of the United Kingdom) and the Republic of Ireland
Superimposed
The boundary between Mali and Mauritania (common throughout Africa and Southwest Asia)
Relic
The boundary between East and West Germany (states that are now combined)
Geometric
The boundary between the United States and Canada along the 49th parallel
Consequent
The boundary between India and Pakistan created for religious reasons