Name the two main Associations that were the precursors of the Indian National Congress.

The most important pre-congress nationalist organizations were the Indian Association of Calcutta and the East India Association. In 1866, Dadabhai Naoroji organized the East India Association in London to discuss the Indian question and to influence British public men to promote Indian welfare. Led by Surendranath and Ananda Mohan Bose, the young nationalists of Bengal founded the Indian Association in July 1876.