Topic - Prayagraj

Allahabad is a metropolis in the Indian state of Uttar Pradesh. Prayagraj is the seventh most populous city in the state, thirteenth in Northern India and thirty-sixth in India, with an estimated population of 1.53 million in the city. The city, in 2016, was also ranked the third most liveable urban agglomeration in the state (after Noida and Lucknow) and sixteenth in the country. Hindi is the most widely spoken language in the city. - Source: Wikipedia