Describe the different events of national …

Gandhiji decided to launch nationwide satyagraha, and to have hartal on 6th April, to protest against the Rowlatt Act. It involved the following:
a. Rallies were organized in various cities, workers went on strike in railway workshops, and shops closed down.
b. However, such an act was retaliated by the British who picked up local leaders from Amritsar, barred Gandhi from entering Delhi, fired at the peaceful processions, imposed martial law followed by the Jallainwala Bahg tragedy that let loose a reign of terror.
c. Mahatma Gandhi felt the need of organizing a  broad based mass movement to paralyze the British administration and to avenge the wrong done in Punjab.
d. The Khilafat agitation ,  was seen as an opportunity by Gandhiji to unify Hindus and Muslims and to launch a mass movement culminating in the non cooperation movement that brought about boycott of foreign cloth, surrender of titles, boycott of foreign schools and active participation of people.