Explanation:

In 1920, the All India Home Rule League merged with Congress which elected Mahatma Gandhi as its president. Several leaders of Home Rule Movement played an important role in the national movement when it entered a truly mass movement phase under the leadership of Gandhi.

In early 1919, the All India Khilafat Committee was formed under the leadership of the Ali brothers, Maulana Abul Kalam Azad, Ajmal Khan and Hasrat Mohani, to force the British Government to change its attitude to Turkey. Thus, the grounds for a country-wide agitation was prepared. An All India Khilafat Conference was held in Delhi under the Presidenship of Gandhi in November 1919 and the call was made to boycott the British goods.