Give reasons as to why Nana Sahib was angry with the British.

Baji Rao II, the last Peshwa, had adopted Nana Sahib as his son. After the Peshwa's death, the British refused to recognize Nana Sahib's claim to the pension and status of the Peshwa. This refusal angered him and led him to take an active part in the Great Uprising of 1857.