During the Provisional Government the order of the three colored sections of the flag were to be used in vertical positions with the order of the colors to be green first, then white, and red and the eagle standing on a cactus plat in the center with a crown on its head.In 1823 the Mexican government became a republic and according to the constitution the flag should have three vertical bands of different colors. The one closest to the flagpole should be green, the middle one white, and the one farthest to the flagpole red. The colors were then chosen green to represent the laurels of victory and hope, white for purity, and red for the blood of the heroes who shed for the independence. The middle section would depict and eagle of Mexican origin without the crown, found standing on a nopal cactus growing on a rock surrounded by water. The eagle is found standing on its left leg holding the serpent with its right claws and grasping it with its beak as if ready to tear it apart. In addition it would be surrounded by the symbols of the republic, the oak and laurel braches tied together with a three-color ribbon.Since then the elements of the flag have been conserved, although the emblem and the eagle has change from time to time in the forms of profile view to frontal view and also three fourths position. In 1865 the emblem changed when the emperor Maximilian be shown in frontal view with a crown shown over the eagle. Later, Porfirio Diaz ordered the eagle to be facing forward with its wings outspread. Venustiano Carranza also changed it when he decided that the eagle should be in left profile and bear the characteristics noted by the Mexican government when they discovered Tenochtitlan. Till now, presidents have modified the emblem however; the emblem as designed by the administration of Carranza’s administration has been kept and respected....
