Fellow-citizens of the United States! The threat of unhallowed disunion--the names of those, once respected, by whom it is uttered--the array of military force to support it--denote the approach of a crisis in our affairs on which the continuance of our unexampled prosperity, our political existence, and perhaps that of all free governments, may depend. The conjecture demanded a free, a full, and explicit enunciation, not only of my intentions, but of my principles of action; and as the claim was asserted of a right by a State to annul the laws of the Union, and even to secede from it at pleasure, a frank exposition of my opinions in relation to the origin and form of our government, and the construction I give to the instrument by which it was created, seemed to be proper. Having the fullest confidence in the justness of the legal and constitutional opinion of my duties which has been expressed, I rely with equal confidence on your undivided support in my determination to execute the laws--to preserve the Union by all constitutional means--to arrest, if possible, by moderate but firm measures, the necessity of a recourse to force; and, if it be the will of Heaven that the recurrence of its primeval curse on man for the shedding of a brother's blood should fall upon our land, that it be not called down by any offensive act on the part of the United States. Fellow-citizens! The momentous case is before you. On your undivided support of your government depends the decision of the great question it involves, whether your sacred Union will be preserved, and the blessing it secures to us as one people shall be perpetuated. No one can doubt that the unanimity with which that decision will be expressed, will be such as to inspire new confidence in republican institutions, and that the prudence, the wisdom, and the courage which it will bring to their defense, will transmit them unimpaired and invigorated to our children. May the Great Ruler of nations grant that the signal blessings with which He has favored ours may not, by the madness of party, or personal ambition, be disregarded and lost, and may His wise providence bring those who have produced this crisis to see the folly, before they feel the misery, of civil strife, and inspire a returning veneration for that Union which, if we may dare to penetrate His designs, He has chosen, as the only means of attaining the high destinies to which we may reasonably aspire. In testimony whereof, I have caused the seal of the United States to be hereunto affixed, having signed the same with my hand. Done at the City of Washington, this 10th day of December, in the year of our Lord one thousand eight hundred and thirty-two, and of the independence of the United States the fifty-seventh. ANDREW JACKSON. By the President. EDW. LIVINGSOE, _Secretary of State_. MONROE DOCTRINE. EXTRACT FROM PRESIDENT MONROE'S ANNUAL MESSAGE, WASHINGTON, DEC. 2, 1823.