Why were Indians angry at the British after world war 1?

Indians were angry at the British after World War I due to the lack of promised political concessions and self-governance despite their significant contributions to the war effort. The British government enacted repressive measures, such as the Rowlatt Act of 1919, which allowed for the arrest and detention of Indians without trial. This fueled widespread discontent and led to violent protests, culminating in tragic events like the Jallianwala Bagh massacre, which further intensified resentment towards British rule.