I found a video on Youtube that shows the gradual change in the span of the Mughal Empire from 1500 A.D till 1900 A.D.
This map shows India in 1947, right before the independence and the partition.
It’s interesting to note that Hyderabad and Jammu & Kashmir were the only princely states that did not accede to either India or Pakistan.
Wikipedia provides some interesting facts about the Indian Mutiny. There is too much to write here. I could probably do a 50 pages paper on it. So, I’ll leave it upto you to read it (that is, if you are interested).
This is how Cawnpore (Read: Kanpur) looked in 1857:
You can also check out this link for more pictures.