Question

why did the sepoys of the company's Army revolt​

Answer 1

Origin of the Mutiny

The immediate cause of the Indian Revolt of 1857, or Sepoy Mutiny, was a seemingly minor change in the weapons used by the British East India Company's troops. ... Thus, by making one small change to its munitions, the British managed to greatly offend both Hindu and Muslim soldiers.

Answer 2

Explanation:

A famous policy under his period was 'Doctrine of Lapse'. Under this, many states, like Satara, Jaitpur, Sambhalpur, Jhansi, were captured by the British who expanded recklessly. Thus the political factors, i.e. expansionary policy of the British greatly contributed towards the revolt of 1857.