Arrange the following statements in sequential order based on the events that shaped the Non-cooperation movement.
i. General Dyer opened fire at the large crowd gathered in the enclosed ground of Jallianwala Bagh.
ii. “Forced recruitment” carried out by the British government and the economic hardships faced by the people during the first world war.
iii. The defeat of the Ottoman Emperor of Turkey led to the formation of the Khilafat movement.
iv. Gandhiji launched a nationwide satyagraha against the Rowlatt act.