 Later, Seleucus sought to guard his eastern frontier and moved Ionian Greeks (also known as Yavanas to many local groups) to Bactria in the 3rd century BC.While the Diadochi were warring amongst themselves, the Mauryan Empire was developing in the northern part of the Indian subcontinent.The founder of the empire, Chandragupta Maurya, confronted a Macedonian invasion force led by Seleucus I in 305 BC and following a brief conflict, an agreement was reached as Seleucus ceded Gandhara and Arachosia (centered around ancient Kandahar) and areas south of Bagram (corresponding to the extreme south-east of modern Afghanistan) to the Mauryans.