The Monroe Doctrine was a statement of principles made by President Monroe in his famous message of December 2, 1823. The occasion of the utterance was the threat by the so-called Holy Alliance to interfere forcibly in South America with a view to reseating Spain in control of her former colonies there. President Monroe, pointing to the fact that it was a principle of American policy not to intermeddle in European affairs, gave warning that any attempt by the monarchies of Europe "to extend their system to any portion of this hemisphere" would be considered by the United States "as dangerous to our peace and safety." This warning fell in line with British policy at the time and so proved efficacious. [Illustration: NEGRO SOLDIERS AND RED CROSS WORKERS IN FRONT OF CANTEEN, HAMLET, N.C.] [Illustration: COLORED RED CROSS WORKERS FROM THE CANTEEN AT ATLANTA, GA., FEEDING SOLDIERS AT RAILWAY STATION.] [Illustration: COLORED WOMEN IN HOSPITAL GARMENTS CLASS OF BRANCH NO. 6. NEW ORLEANS CHAPTER, AMERICAN RED CROSS. LOUISE J. ROSS, DIRECTOR.] [Illustration: RED CROSS WORKERS. PROMINENT COLORED WOMEN OF ATLANTA, GA., WHO ORGANIZED CANTEEN FOR RELIEF OF NEGRO SOLDIERS GOING TO AND RETURNING FROM WAR.] [Illustration: THE GAME IS ON. A BASEBALL MATCH BETWEEN NEGRO AND WHITE TROOPS IN ONE OF THE TRAINING AREAS IN FRANCE.] [Illustration: COL. WILLIAM HAYWARD OF 369TH INFANTRY PLAYING BASEBALL WITH HIS NEGRO SOLDIERS AT ST. NAZAIRE, FRANCE.] [Illustration: JAZZ AND SOUTHERN MELODIES HASTEN CURE. NEGRO SAILOR ENTERTAINING DISABLED NAVY MEN IN HOSPITAL FOR CONVALESCENTS.] [Illustration: ENJOYING A BIT OF CAKE BAKED AT THE AMERICAN RED CROSS CANTEEN AT IS-SUR-TILLE, FRANCE.] [Illustration: CORPORAL FRED. McINTYRE OF 369TH INFANTRY, WITH PICTURE OF THE KAISER WHICH HE CAPTURED FROM A GERMAN OFFICER.] [Illustration: LIEUT. ROBERT L. CAMPBELL, NEGRO OFFICER OF THE 368TH INFANTRY WHO WON FAME AND THE D.S.C. IN ARGONNE FOREST. HE DEVISED A CLEVER PIECE OF STRATEGY AND DISPLAYED GREAT HEROISM IN THE EXECUTION OF IT.] [Illustration: EMMETT J. SCOTT, APPOINTED BY SECRETARY BAKER, AS SPECIAL ASSISTANT DURING THE WORLD WAR. HE WAS FORMERLY CONFIDENTIAL SECRETARY TO THE LATE BOOKER T. WASHINGTON.] [Illustration: (TOP)--GENERAL DIAZ, COMMANDER-IN-CHIEF ITALIAN ARMIES. MARSHAL FOCH, COMMANDER-IN-CHIEF ALLIED FORCES. (CENTER)--GENERAL PERSHING, COMMANDER-IN-CHIEF AMERICAN ARMIES. ADMIRAL SIMS, IN CHARGE OF AMERICAN NAVAL OPERATIONS OVERSEAS. (BOTTOM)--KING ALBERT, COMMANDER-IN-CHIEF BELGIAN ARMY. FIELD MARSHAL HAIG, HEAD OF BRITISH ARMIES.]