Pennsylvania, to wit, turned upon it; and all the amazing success of William Penn's great experiment in colonization. There has never been anything quite like that success in the world's history, for the great trek of the already established American population in the nineteenth century was a readjustment, an extension, rather than a colonization in the true sense. The planting of Pennsylvania was a true colonization. Not only did it amount to the creation of a great and model commonwealth, full-fledged, with a composite new-world population, in twenty or even ten years' time, but it furnished the keystone to the arch of states that constituted the American republic in the next century after Penn's settlement. Philadelphia led the American towns in the seven years of the Revolution. It was their capital commercially as well as politically. It supplied most of the sinews of war. Without Robert Morris's $1,400,000, all of which came from Philadelphia, the final and crucial campaign of the war could not have been fought. More than that, without just the sort of commonwealth that Pennsylvania had already become, standing in the center of things--cosmopolitan, independent of royalist or aristocratic influence, populous, well-to-do, democratic, steady--it is hard to see how the Revolution could have been undertaken at all. But for the incident which permitted Penn's settlement, the vast territory which afterward constituted Pennsylvania would have become merely an extension of New York, or of New Jersey, or of Maryland, or of Virginia, or of all of them. The chances are that its resources would have been exploited by slave labor. The greater part of the state might have remained slave territory up to 1861. In any case its development would have been much more slow, its peopling much less rapid. Not only must Indian wars have checked growth, but the spectacle of the arrival of five hundred thousand stalwart Germans, the creation of the largest city in the colonies within fifty years, and the upbuilding, in that time, of a trade from the Delaware River that employed more than five hundred ships and seven thousand sailors, could never have been presented. The part which Pennsylvania began to play from the moment of Penn's arrival, and which it still plays, in American affairs, was directly dependent upon Penn's character and genius, and, for a long time, upon his wealth and social position. Without the wealth which William Penn inherited from his father, Admiral Sir William Penn, he could not have organized his Pennsylvania Society, nor bought the site of Philadelphia. Without the position, as well as the wealth, which he inherited, he could not, in the first place, have aspired to the acquaintance with and confidence of King Charles II; and these were absolutely essential to the extraordinary charter, in behalf of a despised and distrusted people, which Penn received at the king's hands.