The Mughal Empire dominated most of northern India from the sixteenth to the eighteenth centuries. The Mughal rulers practiced the Muslim religion, but most of the population they governed practiced Hinduism. Even so, the Mughals succeeded in their domain. They worked to bring Muslims closer to Hindus in a united India.
About 15 percent of Americans live in poverty
Some thought war was too drastic. They thought "wait a second, let's not do something crazy here. Let's just try to work with Britain to get our rights back, instead of overthrowing the whole thing and establishing our own thing. That's just too much." Some thought that we would lose the revolution (which, in all honesty, they had good reason to think that) and didn't want to upset Britain.
Heritage day, as its name states, celebrates heritage (obviously). The reason that "closes gaps" from the past is because it celebrates culture that was suppressed in the past, and it promotes diversity and unity that was previously discouraged or prosecuted.