A ruler of this ethnicity established a major Buddhist center at his capital of Sagala. These people were known as Yonas or Yavanas in ancient Pali and Sanskrit sources. Converts of this ethnicity made the earliest iconic statues of the Buddha. The Milindapañha records Nagasena converting a ruler of this ethnicity to Buddhism. Dynasties of this ethnicity spread Buddhism in (*) Gandhāra and (10[1])Bactria. An empire of this ethnicity ceded its easternmost provinces to Chandragupta (-5[1])Maurya in return for the war (10[1])elephants used at the Battle of Ipsus. A conqueror of this (10[1])ethnicity won the Battle of the Hydaspes against King Porus. For 10 points, name this ethnicity of Seleucus and other rulers who succeeded Alexander the (10[1])Great. ■END■