The Theosophical Society was founded in New York in 1875 by Helena Blavatsky and Henry Steel Olcott. Annie Besant joined the society in 1889 and moved to India in 1893, where she played a crucial role in popularizing its ideas and activities, including establishing the Central Hindu College (later Banaras Hindu University) in Varanasi. She is widely recognized as a key leader who significantly influenced the society's trajectory, especially in the Indian subcontinent.