State whether the following statements are true or false:
1. Gandhiji established the ‘Satyagraha’ Ashram at Kochrab on 25th May 1920.
2. The Champaran region of Bihar was famous for its mango plantations.
3. The British government announced the Rowlett Act after the 2nd World War.
4. Gandhiji started the Freedom Movement on the thoughts of non-cooperation.
5. After ending the non-cooperation movement Gandhiji started creative work in rural areas.
6. The Gujarat Vidyapith was established in Ahmedabad during the revolution against to the Simon Commission.
7. Mahatma Gandhi was against a violent revolution.
8. The Constitution of free India was implemented on 15th August 1947.