Which one of the following is NOT correct about Mahatma Gandhi's Dandi Yatra or Salt March?
1. It was the first national activity in which women participated in large numbers
2. Gandhiji allowed the women's participation at the request of Kamaladevi Chattopadhyay.
3. The march was fully covered by the Western press
4. The march began after the failure of the First Round Table Conference in London