Why did Lord Dufferin, the then Viceroy, favour the foundation of the Indian National Congress?

When and by whom was the Bengali weekly Samvad Kaumudi Started?

When and by whom was Satya Shodhak Samaj founded? What did it endeavour to?

In whose viceroyalty did the IIbert bill controversy take place? What was the objective of the bill? Why was it not passed?