How did the mauryan empire ended?

The Mauryan Empire, which reached its zenith under Emperor Ashoka, began to decline after his death in 232 BCE due to a combination of internal strife, economic challenges, and succession issues. The lack of strong leadership and the vastness of the empire made it difficult to maintain control. By the 2nd century BCE, the empire fragmented, leading to the rise of regional powers and eventually succumbing to invasions and external pressures, notably from the Bactrians and later the Indo-Greeks. The last Mauryan ruler, Brihadratha, was overthrown in 185 BCE, marking the official end of the empire.