Rule of the British East India Company over expanding territories on the Indian subcontinent, from the Battle of Plassey to the 1857 rebellion.
Abolished by the Government of India Act 1858 after the 1857 Indian Rebellion; territories and administration transferred directly to the British Crown, becoming the British Raj.
Verified via Open Library (author + title + year match); narrative history of the East India Company's rise to power in India.