Respuesta :

Passing of Indian Councils Act, 1861 which introduced portfolio system in India. Withdrawal of “Doctrine of Lapse” which was one of the main reasons of mutiny of 1858. Introduction of Code of Criminal Procedure.

Baraq

Based on the historical perspective, the significant changes introduced after the 1857 revolt include the "Passing of Indian Councils Act, 1861."

The other significant changes that were introduced are:

  • Withdrawal of “Doctrine of Lapse”
  • Introduction of Code of Criminal Procedure.

The Indian Revolt of 1857 was a war of independence in India in 1857–58 against the rule of the British East India Company.

Hence, in this case, it is concluded that various changes were made after the 1857 revolts.

Learn more about the Indian 1857 revolts here: https://brainly.com/question/1008983