The geopolitical struggle over India between Great Britain and Russia.
A war over land in the black sea between Russia and The Ottomans(aided by the British and the French).
The Crimean War (1853-1856)
A revolt of the Indian soldiers against the British over a religious violation of the beliefs of the soldiers, who were forced to consume pork and beef fat from their rifle cartridges. They believed that the cow was sacred if they were Hindu, and if they were Muslims, they did not eat pork.
The Sepoy Mutiny (1857-1858)
This refers to the period of time when the British started controlling India directly instead of indirectly, They did this to strengthen their hold of their "jewel in the crown".