Complex sentence: In Asia, the Maurya Empire (322--185 BCE) existed in present-day India; in the 3rd century BCE, most of South Asia was united to the Maurya Empire by Chandragupta Maurya and flourished under Ashoka the Great.
Split into simpler sentences: In Asia, the Maurya Empire (322--185 BCE) existed in present-day India. In the 3rd century BCE, most of South Asia was united to the Maurya Empire by Chandragupta Maurya and flourished under Ashoka the Great.