After the Kalinga War the Maurya king Ashoka sent emissaries to spread Buddhism across Asia. Chinese travellers visited Buddhist and Hindu temples and libraries in the universities of Magadha Empire.
The Emperor of Kalinga Mahameghavahana Aira Kharavela was one of the most powerful monarchs of ancient India.
West Bengal's capital Kolkata is the largest city of this region.
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East India including Bihar and West Bengal was part of the Mughal Empire in the 16th and 17th centuries.
Odisha remained a powerful Hindu dynasty under the rule of Soma/Keshari Dynasty, Eastern Ganga Dynasty, Surya Dynasty till the end of the 16th century.
The Jain thirkhankar Mahaveer was born here and founded Jainism.
Islamic invasions in the 13th century resulted in the collapse of Hindu kings and most Buddhists, especially in East Bengal, converted to Islam.
Jharkhand, on the Chhota Nagpur plateau, is a hilly and a heavily forested state rich in mineral wealth. The region is bounded by the Nepal and Sikkim Himalayas in the north, the states of Uttar Pradesh and Chhattisgarh on the west, the state of Andhra Pradesh in the south and the Bay of Bengal on the east.
It is connected to the Seven Sister States of Northeast India by the narrow Siliguri Corridor in the north east of West Bengal.
The region was the historical centre of the Nanda, Mahameghavahana dynasty Maurya, Kharavela, Shunga, Kalinga, Eastern Ganga dynasty, Shishunaga dynasty, Gupta and Pala empires that ruled much of the Indian sub-continent at their prime.
In medieval India, it was incorporated into the Mughal, Maratha and then the British empire.
Odishaa classical dance Odissi and a classical music Odissi music are also well known in India.
The bulk of the region lies on the east coast of India by the Bay of Bengal, and on the Indo-Gangetic plain.
Its capital Calcutta grew into one of the world's greatest ports.