Dear Student,
1. The city associated with the jallinwala bagh incident is Amritsar. Amritsar is in Punjab State located in the north side of Punjab and near to the boundary of Punjab and Pakistan.
2. The place where Indian national Congress was held is Calcutta now called as Kolkata. Kolkata is located in West Bengal near to the boarder line of India touching Bay of Bengal and Bangladesh.
3. The national Congress session was held in dec 1920 4To organise Satyagraha movement against cotton mill workers is Ahemdabad it is in central Gujarat located near to the point touching Gujarat and Gulf of Khambhat.
Regards.