In Spain, Espartero is superseded by O'Donnell as prime minister; insurrections occur in Madrid and Barcelona due to latter's dictatorial measures; Narvaez in turn succeeds. In Central America, war is waged against President Walker by confederation of states led by Costa Rica; Walker defeats three thousand Costa Ricans at Rivas. In Mexico, General Comonfort is elected president. In China, a United States squadron destroys barrier forts near Canton because of an attack on an American boat. In the United States, civil war wages in Kansas; great political struggle continues there between Free Soil and Slavery factions, and is reflected in Congress; a speech of Senator Sumner, of Massachusetts, provokes violent personal assault by Representative Brooks, of South Carolina. Nine weeks' contest for Speaker of the House of Representatives. Resolution against slave-trade passed by the House. Congress passes an act to aid in the laying of the Atlantic cable. Dispute with England on the construction of the Bulwer-Clayton Treaty and alleged violation of the neutrality laws. Mr. Crampton, the British minister, receives his passports, and the consuls at New York, Philadelphia, and Cincinnati are dismissed. Later in the year the matter is satisfactorily adjusted and articles agreed upon for settlement of Central American questions. American whalers, having brought into port the British arctic relief-ship Resolute, a derelict, Congress purchases it, refits it, and sends it to Queen Victoria as token of American good-will. First bridge over the Mississippi is built at Minneapolis. Beginning of experiments with the Bessemer process for the production of steel. Condensed milk is patented. James Buchanan, Democrat, elected President of the United States, and J.C. Breckinridge, Vice-President; defeated candidates: John C. Fremont, Republican, and Millard Fillmore, American or "Know-Nothing." =RULERS--The same as in the previous year.= 1857 In India, outbreak of mutiny among the Sepoys or native soldiers. Rebellion spreads rapidly under Nana Sahib and other hostile chiefs. Savage cruelties upon Europeans are perpetrated by Sepoys at Meerut, Delhi, and particularly at Cawnpore, where four hundred and fifty men, women, and children are massacred; all central India in revolt. Cawnpore and Delhi recovered by British; garrison at Lucknow besieged and relieved by Havelock, who in turn is besieged and relieved by Sir Colin Campbell. British defeat Persians at Khooshab, and treaty of peace ends Persian War. English, aided by French, continue punitive war against China. The Mont Cenis tunnel through the Alps is begun. Napoleon III and Empress Eugénie pay visit to Queen Victoria. Commercial panic in England. Death of Douglas Jerrold, English novelist and dramatist; Comte, French speculative philosopher; Eugène Sue, French novelist; and Béranger, French poet.