Goa is India's smallest state by area and the fourth smallest by population. Located on the west coast of India in the region known as the Konkan, it is bounded by the state of Maharashtra to the north, and by Karnataka to the east and south, while the Arabian Sea forms its western coast.
After India gained independence from British rule in 1947, India requested that Portuguese territories on the Indian subcontinent be ceded to India. Portugal refused to negotiate on the sovereignty of its Indian enclaves. On 19 December 1961, the Indian Army invaded with Operation Vijay resulting in the annexation of Goa, and of Daman and Diu islands into the Indian union. Goa, along with Daman and Diu, was organised as a centrally administered union territory of India. On 30 May 1987, the union territory was split, and Goa was made India's twenty-fifth state, with Daman and Diu remaining a union territory.