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.