Several European traders reached this area in the late 15thcentury. The British East India Company defeated Siraj ud-Daulah, the last independent Nawab, in the Battle of Plassey in 1757. The company gained the right to collect revenue in Bengal subah (province) in 1765 with the signing of the treaty between the East India company and the Mughal emperor following the Battle of Buxar in 1764. The Bengal Presidency was established in 1765; it later incorporated all British-controlled territory north of the Central Provinces (now Madhya Pradesh), from the mouths of the Ganges and the Brahmaputra to the Himalayas and the Punjab. The Bengal famine of 1770 claimed millions of lives due to tax policies enacted by the British company. Calcutta, the headquarters of the East India company, was named the capital of British-held territories in India in 1773. The failed Indian rebellion of 1857 started near Calcutta and resulted in a transfer of authority to the British Crown, administered by the Viceroy of India.