The most powerful regions of ancient and medieval South Asia

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Throughout the history of South Asia there were a lot of great Dynasties which originated
in different parts of South Asia and which dominated the major parts of South Asia. But which states were the most powerful of South Asia during ancient and medieval period? The recorded
history of South Asia starts with the establishment of the Magadha Dynasty in the 5th century BC in eastern India.
Here is a list of the most dominant of ancient and medieval South Asia:
5th century BC: Eastern India Magadha Dynasty
4th-3rd century BC: Eastern India Maurya Empire
2nd century BC-1st century CE: Southern India Satavahana Dynasty
2nd century CE: Northwestern India Kushan Empire
4th-5th century: Eastern india Gupta Empire
7th century: Southern India Chalukya Dynasty
8th century: Northwestern India Pratihara Dynasty
9th-10th century: Southern India Rashtrakuta Empire
11th-12th century: Northwestern and Southern India Ghaznavid, Chola and Western Chalukya Empires
13th-14th century: North India Delhi Sultanate
15th century: Southern India Vijayanagar Empire
16th-17th century: North India Mughal Empire
18th century: Southern India Maratha Empire