what are the changes depicted to delhi after the revolt of 1857
From the end of 1857, the British had begun to gain ground again. Lucknow was retaken in March 1858. On 8 July 1858, a peace treaty was signed and the rebellion ended. The last rebels were defeated in Gwalior on 20 June 1858. By 1859, rebel leaders Bakht Khan and Nana Sahib had either been slain or had fled.
The rebels' murder of women, children and wounded British soldiers at Cawnpore, and the subsequent printing of the events in the British papers, left many British soldiers seeking revenge. As well as hanging mutineers, the British had some "blown from cannon" (an old Mughal punishment adopted many years before in India). Sentenced rebels were tied over the mouths of cannons and blown to pieces when the gun was fired.
Changes in the policies of the British after the suppression of the rebellion of 1857:
(i) British Crown took over the control of administration − The British Parliament passed an Act in 1859, under which, the powers of the East India Company were transferred to the British Crown. The British government was now directly responsible for ruling India.
(ii) Provided a sense of security to the local rulers − The ruling chiefs of the country were assured that their territories would never be annexed by the British. However, they had to swear allegiance to the British crown. They also abolished the Doctrine of Lapse, thereby allowing rulers to pass on their kingdoms to adopted sons.
(iii) Provided a sense of security to landowners − Policies were made to protect landlords and zamindars, and give them security of rights over their lands.
(iv) Reorganised the army − The proportion of Indian soldiers in the army was reduced and the number of European soldiers in the army was increased.
(v) Treated the Muslims with suspicion and hostility − Considering them to be responsible for the rebellion in a big way, the British confiscated the land and property of Muslims on a large scale.
(vi) Promised non-interference in the sphere of religion − The British assured the people of India that their religious and social practises would be respected and not interfered with.