In 200 BC, after the passing of his father Euthydemus I, Demetrius I “The Unconquered” ascended to the Bactrian throne, which encompassed areas of present-day Afghanistan, Tajikistan, and Uzbekistan. The Greco-Bactrians were known for their unique conversion to and development of “Greco-Buddhism”, which Demetrius I himself practiced. Despite this, many Greco-Buddhists, including Demetrius I, continued to revere the Greek pantheon. By the time of his death, Demetrius I had extended his kingdom’s reach from the Aral Sea in the north to the Kathiawar Peninsula in the south, and from the mountains of Daylam in the west to the deserts of Xinjiang in the far east.