It will be easy about me, why do you think? As an independent sovereign Ivan lll began to behave towards the Tatars. In 1476. He refused to pay them an annual tribute and entered into an alliance with the Crimean Khan, an enemy of the Golden Horde. Standing on the Ugra (1480) put an end to the Mongol-Tatar yoke. The Russian state acquired formal sovereignty.
William the Conqueror was important because he established feudalism in Europe.
The Dravidians were the majority population across the Indian subcontinent before the second millennium