Why did industrial production in India increase during the First World War?

Till the First World War, industrial growth in India was slow. The war created a dramatically new situation. Manchester imports into India declined due to the war. The British factories became busy with producing things needed for the army. Indian mills now suddenly had a large market to supply. The long war made the Indian factories supply them with jute bags, cloth for army uniforms, tents and leather boots, horse and mule saddles, and a host of other items. Many workers were employed for longer hours. After the war Manchester goods lost their hold on the Indian markets. British economy collapsed as it could not compete with the USA, Japan, and its European rivals. The Indian industrialists captured the local market. Small scale industries prospered. read less