When the battle of Bunker Hill was fought, the existence of South America was scarcely felt in the civilized world. The thirteen little Colonies of North America habitually called themselves the "Continent." Borne down by Colonial subjugation, monopoly, and bigotry, these vast regions of the South were hardly visible above the horizon. But in our day there has been, as it were, a new creation. The southern hemisphere emerges from the sea. Its lofty mountains begin to lift themselves into the light of heaven; its broad and fertile plains stretch out, in beauty, to the eye of civilized man, and at the mighty bidding of the voice of political liberty the waters of darkness retire. [Sidenote: The example of the republic of the United States.] And, now, let us indulge an honest exultation in the conviction of the benefit which the example of our country has produced, and is likely to produce, on human freedom and human happiness. Let us endeavor to comprehend in all its magnitude, and to feel in all its importance, the part assigned to us in the great drama of human affairs. We are placed at the head of the system of representative and popular governments. Thus far our example shows that such governments are compatible not only with respectability and power, but with repose, with peace, with security of personal rights, with good laws, and a just administration. We are not propagandists. Wherever other systems are preferred, either as being thought better in themselves, or as better suited to existing condition, we leave the preference to be enjoyed. Our history hitherto proves, however, that the popular form is practicable, and that with wisdom and knowledge men may govern themselves; and the duty incumbent on us is to preserve the consistency of this cheering example, and take care that nothing may weaken its authority with the world. If, in our case, the representative system ultimately fail, popular governments must be pronounced impossible. No combination of circumstances more favorable to the experiment can ever be expected to occur. The last hopes of mankind, therefore, rest with us; and if it should be proclaimed that our example had become an argument against the experiment, the knell of popular liberty would be sounded throughout the earth. These are excitements to duty; but they are not suggestions of doubt. Our history and our condition, all that is gone before us, and all that surrounds us, authorize the belief that popular governments, though subject to occasional variations, in form perhaps not always for the better, may yet, in their general character, be as durable and permanent as other systems. We know, indeed, that in our country any other is impossible. The _principle_ of free governments adheres to the American soil. It is bedded in it, immovable as its mountains. [Sidenote: The obligations of Americans.]