Greek communities had been present in neighbouring Bactria and in northwestern India since the time of the conquests of Alexander the Great around 323 BCE, and developed into the Greco-Bactrian Kingdom and the Indo-Greek Kingdom until the end of the 1st century BCE. Greeks were generally described in ancient times throughout the Classical world as "Yona", "Yonaka", "Yojanas" or "Yavanas", lit. “Ionians". They were ardent recipients of Buddhism and the example of Dharmarakṣita indicates that they even took an active role in spreading Buddhism as leading missionaries.