When the Isthmus is pierced this isolation will pass away, and with it the indifference of foreign nations. From wheresoever they come and whithersoever they afterward go, all ships that use the canal will pass through the Caribbean. Whatever the effect produced upon the prosperity of the adjacent continent and islands by the thousand wants attendant upon maritime activity, around such a focus of trade will centre large commercial and political interests. To protect and develop its own, each nation will seek points of support and means of influence in a quarter where the United States has always been jealously sensitive to the intrusion of European powers. The precise value of the Monroe doctrine is very loosely understood by most Americans, but the effect of the familiar phrase has been to develop a national sensitiveness, which is a more frequent cause of war than material interests; and over disputes caused by such feelings there will preside none of the calming influence due to the moral authority of international law, with its recognized principles, for the points in dispute will be of policy, of interest, not of conceded right. Already France and England are giving to ports held by them a degree of artificial strength uncalled for by their present importance. They look to the near future. Among the islands and on the mainland there are many positions of great importance, held now by weak or unstable states. Is the United States willing to see them sold to a powerful rival? But what right will she invoke against the transfer? She can allege but one, that of her reasonable policy supported by her might.
Whether they will or no, Americans must now begin to look outward. The growing production of the country demands it. An increasing volume of public sentiment demands it. The position of the United States, between the two Old Worlds and the two great oceans, makes the same claim, which will soon be strengthened by the creation of the new link joining the Atlantic and Pacific. The tendency will be maintained and increased by the growth of the European colonies in the Pacific, by the advancing civilization of Japan, and by the rapid peopling of our Pacific States with men who have all the aggressive spirit of the advanced line of national progress. Nowhere does a vigorous foreign policy find more favor than among the people west of the Rocky Mountains.