What is "samangan"

Samangan (previous: Eukratidia; then Aybak or Aibak) is a provincial town, medieval caravan stop, and the headquarters of the Samangan Province in the district of the same name in the northern part of Afghanistan. As an ancient town and major Buddhist centre during the 4th and 5th centuries under the then Kushan rulers, it has the ruins of that period at a place known now as Takht-e-Rustam, which is located on a hill above the town.