The union between two people does not need a license. However for convenience sake, there are some things where a marriage license proves useful. To get a mortgage to buy a house, to be legally considered a spouse in medical emergencies, and for hospital visits, in case of death for inheritance purposes, for insurance purposes, in case of divorce.
Most countries, white or non-white, have marriage licenses and they operate basically in the same way.
Why are these old threads popping up, by the way?
My AV represents the Harpy Eagle, whichis the national bird of Panama. It is an endangered species that nests high in the forests of regions that go from Mexico to South America.