people could now see more of the world without leaving their couch
Union soldiers were fighting for the freedom of slaves and reuniting the states. Confederate soldiers fought for protecting the confederacy. Yes, it did change over the war.
A series of foreign invasions affected Mughal Empire very badly. Attacks by Nadir Shah and Ahmad Shah Abdali, which were themselves the consequences of the weakness of the Empire, drained the Empire of its wealth, ruined its trade and industry in the North, and almost destroyed its military power.
