Henry Vivian Derozio, a teacher at Hindu College, Calcutta, inspired the Young Bengal Movement in the late 1820s, encouraging free thinking and rationality among the youth.

Satyarth Prakash is a key text written by Maharishi Dayanand Saraswati in 1875, outlining the principles of the Arya Samaj and his interpretation of the Vedas.

Swami Vivekananda founded the Ramakrishna Mission on May 1, 1897, to propagate the teachings of his guru, Ramakrishna Paramhansa, and to carry out humanitarian work.

The Arya Samaj was founded by Swami Dayanand Saraswati in Bombay in 1875. Its headquarters were later shifted to Lahore.

Swami Dayanand Saraswati, the founder of the Arya Samaj, gave the slogan 'Go back to the Vedas', believing the Vedas to be infallible and the source of all true knowledge.

Raja Ram Mohan Roy founded the Brahmo Sabha in August 1828, which was later renamed the Brahmo Samaj. It aimed to purify Hinduism and preach monotheism.

Raja Ram Mohan Roy is widely regarded as the Father of the Indian Renaissance for his pioneering role in social, religious, and educational reforms in 19th-century India.

Dalhousie’s term as Governor-General (1848–1856) was the period when the Doctrine of Lapse was enforced actively.

Rani Lakshmibai led resistance at Jhansi in 1857 after her state had been annexed under the doctrine.

Dalhousie actively promoted railways, telegraphs, and roads to integrate British-controlled territories.