For five centuries, travelers have brought their hopes and dreams to America. For the earliest pioneers, it was a virgin wilderness ready to be shaped into a “New World," a potential paradise wasted on its native peoples. Millions of immigrants followed, to share in the building of the new nation and to better their lives, far from the hidebound societies of Europe and Asia. Eventually, slaves, who had been shipped over from Africa and the Caribbean, joined them as free citizens. As the United States expanded to fill the continent, something genuinely new was created: a vast country that took pride in defining itself in the eyes of the world.