You find facts then look it up and then u answer
Alexander the Great is important because by the age of thirty he had created one of the largest empires in ancient history. He was the ancient ruler of Macedonia, what is now north eastern Greece and as ruler he conquered most of the civilized world, from Greece to Egypt, Persia and India. He is known as one of the greatest commanders of all time and was undefeated in battle.
It depends on your definition of hero, I guess. The fact that Gandhi and MLK did not use force to advocate for their opinions was mature and moral. They did not give up the first time. But maybe if the cause is correct, one might have to break the stated law, and become a hero.
Child labor is a continuous thing related to slavery by factories not having enough employees or very poor families not being able to gain enough money would be manipulated by someone promising money and edu. for their child or selling the child into labor or forcing them into it.