The history of America is a branch of that of Europe. The discovery, exploration, and settlement of the New World were results of European movements, and sprang from economic and political needs, development of enterprise, and increase of knowledge, in the Old World. The fifteenth century was a period of extension of geographical knowledge, of which the discovery of America was a part; the sixteenth century was a time of preparation, during which European events were taking place which were of the first importance to America, even though none of the colonies which were to make up the United States were yet in existence. From the time of the settlement forward, the only population of America that has counted in history has been of European origin. The institutions that characterize the New World are fundamentally those of Europe.