Who was the Viceroy of India when the Rowlatt Act was passed?

When was the Rowlatt Act passed?

Who was the Prime Minister of England when the Montague-Chelmsford Act was passed in 1919?

The 'Anarchical and revolutionary act' was passed in which year?

In which month of 1918 was the ‘Champaran Agrarian Act’ passed against the European indigo planters?

What was the age of Mahatma Gandhi when he returned to India from South Africa?