It is America's right to stretch from sea to shining sea. Not only do we have a responsibility to our citizens to gain valuable natural resources we also have a responsibility to civilize this beautiful land." "... The American claim is by the right of our manifest to overspread and to possess the whole of the continent which Providence has given for the development of the great experiment of liberty and federative self-government entrusted to us. It is a right such as that of the tree to the space of air and earth for the full expansion of its principle and destiny of growth..." What are three reasons that are given in support of the Manifest Destiny?