War vessel demanded.
May 23, 1854 .-- Political disturbances.

War vessel requested.
June 28, 1854 .-- Attempted revolution.
October 24, 1854 .-- Independence of Isthmus demanded by provincial legislature.
April, 1856 .-- Riot, and massacre of Americans.
May 4, 1856 .-- Riot.
May 18, 1856 .-- Riot.
June 3, 1856 .-- Riot.
October 2, 1856 .-- Conflict between two native parties.

United States force landed.
December 18, 1858 .-- Attempted secession of Panama.
April, 1859 .-- Riots.
September, 1860 .-- Outbreak.
October 4, 1860 .-- Landing of United States forces in consequence.
May 23, 1861 .-- Intervention of the United States force required, by intendente.
October 2, 1861 .-- Insurrection and civil war.
April 4, 1862 .-- Measures to prevent rebels crossing Isthmus.
June 13, 1862 .-- Mosquera's troops refused admittance to Panama.
March, 1865 .-- Revolution, and United States troops landed.
August, 1865 .-- Riots; unsuccessful attempt to invade Panama.
March, 1866 .-- Unsuccessful revolution.
April, 1867 .-- Attempt to overthrow Government.
August, 1867 .-- Attempt at revolution.
July 5, 1868 .-- Revolution; provisional government inaugurated.
August 29, 1868 .-- Revolution; provisional government overthrown.
April, 1871 .-- Revolution; followed apparently by counter revolution.
April, 1873 .-- Revolution and civil war which lasted to October, 1875.
August, 1876 .-- Civil war which lasted until April, 1877.
July, 1878 .-- Rebellion.
December, 1878 .-- Revolt.
April, 1879 .-- Revolution.
June, 1879 .-- Revolution.
March, 1883 .-- Riot.
May, 1883 .-- Riot.
June, 1884 .-- Revolutionary attempt.
December, 1884 .-- Revolutionary attempt.
January, 1885 .-- Revolutionary disturbances.
March, 1885 .-- Revolution.
April, 1887 .-- Disturbance on Panama Railroad.
November, 1887 .-- Disturbance on line of canal.
January, 1889 .-- Riot.
January, 1895 .-- Revolution which lasted until April.
March, 1895 .-- Incendiary attempt.
October, 1899 .-- Revolution.
February, 1900, to July, 1900 .-- Revolution.
January, 1901 .-- Revolution.
July, 1901 .-- Revolutionary disturbances.
September, 1901 .-- City of Colon taken by rebels.
March, 1902 .-- Revolutionary disturbances.
July, 1902 .-- Revolution The above is only a partial list of the revolutions, rebellions, insurrections, riots, and other outbreaks that occurred during the period in question; yet they number fifty-three for the fifty-three years, and they showed a tendency to increase, rather than decrease, in numbers and intensity.

One of them lasted for nearly three years before it was quelled; another for nearly a year.

In short, the experience of over half a century had shown Colombia to be utterly incapable of keeping order on the Isthmus.