Menander (165/155 - 130 BCE) was the greatest of the Indo-Greek kings. From his original kingdom in Bactria, he conquered all of the Punjab. His empire stretched from the Kabul River valley in the west to the Ravi River in the east, and from the Swat Rver valley in the north to Helmand Province in the south. His military expeditions ranged all the way to the Ganges River valley. He conquered more tribes than Alexander the Great—no small feat. His impact on the culture of the region was profound. He was among the -earliest converts to Buddhism.