When was the city of Merv established?
Merv
Merv (Turkmen: Merw, Мерв, مرو; Persian: مرو‎, Marv; formerly Achaemenid Persian Satrapy of Margianal; later Alexandria and subsequently  Antiochia in Margiana; Greek: Ἀλεξάνδρεια or Ἀντιόχεια ἡ ἐν τῇ Μαργιανῇ) was a major oasis-city in Central Asia, on the historical Silk Road, located near today's Mary in Turkmenistan.