Transcontinental royal intermarriage
Transcontinental royal intermarriages is royal intermarriage between royal families originating from different continents. One of the best-known instances of transcontinental royal intermarriage is the one between Alexander the Great, king of Macedon, and his three wives, Roxana, Stateira and Parysatis.
Source: Wikipedia — Transcontinental royal intermarriage (CC BY-SA 4.0)