Answer:

Gandhiji decided to withdraw the 'Non-Cooperation Movement' in February 1922 because of the following reasons : In 1922, at Chauri-Chaura in Gorakhpur, a peaceful mob turned violent and clashed with the police resulting in the deaths of several policemen.

Explanation:

this answer for your 1st question

question:

The ________________ Act curbed fundamental rights such as the freedom of

expression and strengthened police powers.

Explanation:

Rowlett act