In locations such as the Caribbean Sea, international borders between island states are determined by the United Nations Convention on the Law of the Sea. These maritime boundaries can best be described as relict borders relict borders superimposed borders superimposed borders subsequent borders subsequent borders antecedent borders antecedent borders consequent borders

Superimposed borders.

Explanation:

A superimposed border is a border, international or internal to a country, which is established by the simple discretion of those who have the power to set it, without taking into account other cultural, historical or geographical factors that could delimit it in a more genuine way. That is to say, this type of borders does not respect a preceding logical pattern, but rather their tracing responds to merely political questions. A clear example of this type of borders are those where a straight line is drawn on the map to divide two different entities, such as the borders of the state of Colorado.