Use the passage below to answer the following question: [T]his race of unequaled energy, with all the majesty of numbers and the might of wealth behind it-the representative, let us hope, of the largest liberty, the purest Christianity,…will spread itself over the earth…[T]his powerful race will move down upon Mexico, down upon Central and South America, out upon the islands of the sea, over upon Africa and beyond. And can any one doubt that the results of this competition of races will be the "survival of the fittest?"—Vincent Ferraro, Resources for the Study of International Relations and Foreign Policy, Mount Holyoke College International Relations Program, 2010 What 19th century philosophy is described in this excerpt?