The end of the colonial era

During the end of the colonial era, in the desperate attempt to curb violence, protest, sedition, as well as civil unrest against the British’ s Rule, the British Indian government passed the controversial Rowlatt Acts of 1919, a decision which ignited severe political uprising in India, please explain and provide full detailed coverage of this act in relation to “The Amritsar Massacre” and how the whole incident finally led to the struggle for Indian independence and civil disobedience movement under the leadership of the great Mahatma Gandhi.