East India (Bengali: পূর্ব ভারত purbo bharot) is a region of India consisting of the states of West Bengal, Bihar,Jharkhand, and Orissa. The states of Orissa and West Bengal share some cultural and linguistic characteristics with Bangladesh and with the state of Assam. Together with Bangladesh, West Bengal formed the ethno-linguistic region of Bengal before partition in 1947. The historic region of Bengal which was ruled by Nawabs of Bengal comprises the present Bihar, Jharkhand, West Bengal and Bangladesh from where the British started their conquest of India. Bengali language is the most spoken language in this region.

Kolkata, known as the cultural capital of India, is the largest metropolitan city of this region.

The bulk of the region lies on the east coast of India by the Bay of Bengal, and on the Indo-Gangetic plain. 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.

India (ⁱ/ˈɪndiə/), officially the Republic of India (Bhārat Gaṇarājya), is a country in South Asia. It is the seventh-largest country by geographical area, the second-most populous country with over 1.2 billion people, and the most populous democracy in the world. Bounded by the Indian Ocean on the south, the Arabian Sea on the south-west, and the Bay of Bengal on the south-east, it shares land borders with Pakistan to the west;China, Nepal, and Bhutan to the north-east; and Burma and Bangladesh to the east. In the Indian Ocean, India is in the vicinity of Sri Lanka and the Maldives; in addition, India's Andaman and Nicobar Islands share a maritime border with Thailand and Indonesia.

Home to the ancient Indus Valley Civilisation and a region of historic trade routes and vast empires, the Indian subcontinent was identified with its commercial and cultural wealth for much of its long history. Four of the world's major religions—Hinduism, Buddhism, Jainism, and Sikhism—originated here, whereas Zoroastrianism, Christianity, and Islam arrived in the 1st millennium CE and also helped shape the region's diverse culture. Gradually annexed by and brought under the administration of the British East India Company from the early 18th century and administered directly by the United Kingdom from the mid-19th century, India became an independent nation in 1947 after a struggle for independence that was marked by non-violent resistance led by Mahatma Gandhi.