Before these tendencies had worked themselves out, three new forces entered. In the sudden extension of our boundaries to the Pacific Coast, which took place in the forties, the nation won so vast a domain that its resources seemed illimitable and its society seemed able to throw off all its maladies by the very presence of these vast new spaces. At the same period the great activity of railroad building to the Mississippi Valley occurred, making these lands available and diverting attention to the task of economic construction. The third influence was the slavery question which, becoming acute, shaped the American ideals and public discussion for nearly a generation. Viewed from one angle, this struggle involved the great question of national unity. From another it involved the question of the relations of labor and capital, democracy and aristocracy. It was not without significance that Abraham Lincoln became the very type of American pioneer democracy, the first adequate and elemental demonstration to the world that that democracy could produce a man who belonged to the ages. After the war, new national energies were set loose, and new construction and development engaged the attention of the Westerners as they occupied prairies and Great Plains and mountains. Democracy and capitalistic development did not seem antagonistic. Any survey of Western forces which have affected American ideals, would be sadly defective which failed to take account of the profound influence of immigration. Whether we consider the enthusiasts who came to find in the wilderness the freedom to institute their experiments in religion, or the masses who broke from their Old World habits and customs and turned to America as the land of promise, there is the same note of hope and aspiration. On the dullest faces of the steerage a new light falls as the American gateway is entered. We shall not comprehend the element that are shaping and are to shape our destiny, without due realization of the immigrant's dream. With the passing of the frontier, Western social and political ideals took new form. Capital began to consolidate in even greater masses, and increasingly attempted to reduce to system and control the processes of industrial development, but of the age of free competition, there came the greatest private fortunes and the most stupendous combination of economic interests in few hands that the world has ever seen. Labor with equal step organized its forces to destroy the old competitive system, it is not strange that the Western pioneers took alarm for their ideals of democracy as the outcome of the free struggle for the national resources became apparent. Prophesied by the Granger movement, these new tendencies came fully into the light with the Populists and from them the new gospel passed to Bryan Democracy, Roosevelt Republicanism and the Progressives.