Why has the power to regulate interstate commerce become such an important power of congress?

What choices did the family of emmett till and their supporters make in exposing the brutality of his murder? how did these choices shape public reaction to the murder?

Why are governments formed? what role does government play in society? what would life be like without government? what purpose of government would have the most dramatic effect on society if it were taken away? which purpose of government has the greatest effect on your daily life?

The name of mexico before it won independence