A. He overturned a treaty that was signed unfairly.
Egypt. Hieroglyphics and Sumerian cuneiform
Because it could. These countries (Baltic States) have strategic value because of their location (ports, places for airports). Also the governing ideology in the SU that time was a communism which supported a global revolution, uniting the whole world under in a communist utopia.
Basically, the British Company army won so hard that the Mughals were completely defeated and went into hiding since they became extremely poor now. The whole valley around the Ganges river was left as an open territory because of this which the Company could control, especially since the Shah decided to ally himself with them.
