"How long, O God, shall men be ridden down,
Tennyson on Poland And trampled under by the last and least
Of men? The heart of Poland hath not ceased
To quiver, tho' her sacred blood doth drown
The fields, and out of every smouldering town
Cries to Thee, lest brute Power be increased."

In Russia during this year Otto von Kotzebue, the great navigator and Arctic explorer, died in his fifty-ninth year.

Almost simultaneously with the attempted revolution of Poland, another revolt broke out in Portugal. On April 20, the northern provinces rose against the Ministry of Costa Cabral, the Duke of Tomar. After desultory Civil war in Portugal fighting, the Duke of Plamella, one of the commanders of the constitutional army, gave up the struggle. He resigned his post and was banished from the country. Late in the year the Marquis of Saldanha, with a force of Pedro loyalists, defeated Count Bonfinn at the Torres Vedras.

In Spain, the long-pending diplomatic struggle over the Spanish marriages culminated, on October 10, in the wedding of Queen Isabella to her cousin, Don Francisco d'Assisi, Duke of Cadiz. Put forward by France, this prince Spanish princesses married was physically unfit for marriage. Simultaneously with the Queen's wedding, her sister was married to the Duke of Montpensier, the son of Louis Philippe. Thus the King of France and his Minister, Guizot, had their way.

Lord Palmerston's candidature of the Prince of Saxe-Coburg for Queen Isabella's hand was foiled. It proved a doubtful success for France. The entente cordiale between France and Great Britain was broken. Guizot was Guizot's doubtful success charged in the Chambers with sacrificing the most valuable foreign alliance for the purely dynastic ambitions of the House of Orleans. Having cut loose from England, Guizot now endeavored through his diplomatic envoys to form a new concert of Europe from which England should be left out.

Great Britain's diplomatic dispute with America, concerning the northwestern boundary, was satisfactorily settled by the Oregon treaty, Oregon treaty signed signed on June 15. Before this a peremptory demand had been put forward by the American Congress that the joint occupation of Oregon should cease. The British originally claimed all the territory west of the Rocky Mountains, from Mexico to Alaska. For years the land was settled jointly. Now the forty-ninth degree of northern latitude was accepted as the boundary between British North America and the United States. The Columbia River was retained by the United States, with free navigation conceded to English ships, while the seaport of Vancouver, the importance of which was not as yet recognized, fell to England. The value of this possession was soon Rae's Arctic explorations revealed. Agents of the British Hudson's Bay Company selected Victoria, on the Island of Vancouver, as the most promising British port in the Pacific. During this same year, Dr. John Rae, by sledge journeys of more than 1,200 miles, explored the northernmost region, Boothia, wherein was determined the northern magnetic pole.

On October 16, Dr. J.C. Warren of Boston, to whom Drs. Wells and Morton had communicated their discoveries with sulphuric ether, demonstrated the potency of the drug in a public test. A severe operation was performed at Ether in surgery the Boston Hospital, in the presence of some of the foremost medical men of the city, while the patient remained unconscious. The news was heralded abroad and was received by medical men throughout the world as a new revelation. Dr. Oliver Wendell Holmes, the famous physician and author, named the new method "Anæsthesia." The credit of the new discovery was claimed forthwith by several persons—notably by Dr. Charles T. Jackson of Boston, and Dr. Crawford W. Long of Alabama. A few months after the value Chloroform of ether in surgery had come to be clearly recognized, a Scotch surgeon, Sir J.V. Simpson, discovered that chloroform could be administered with analogous effect.

In the United States, during this period, the long-expected war with Mexico was well under way. By a joint resolution of Congress, Texas had at last been admitted into the Union. General Taylor took position in Texas, opposite Matamoras on the Rio Grande, where the Mexican troops were Mexican war begun gathering. Taylor presently moved his troops to Point St. Isabel. There a fleet of seven ships brought supplies. Leaving a part of his force there, he marched to a point on the Rio Grande opposite Matamoras, where he built Fort Brown, named after Major Brown, whom he left in command. The ground was malarious, and many soldiers died of disease. On April 12, the Mexican general, Ampudia, moved forward with a strong force to drive Taylor beyond the Rio de la Nueces. Ampudia demanded that Taylor should withdraw within twenty-four hours, but Taylor refused to leave what he claimed to be the soil of the United States. Ampudia hesitated, and General Arista was appointed in his place. Learning that two vessels with supplies for the Mexicans were about to enter the Rio Grande, Taylor caused the river to be Mexican success blockaded, at the "cost of war." Arista prepared to attack Fort Brown, and cut off communication between Taylor and his supplies. Captain Thornton's command, sent out to reconnoitre, was captured on April 26. Only Thornton escaped by leaping his horse over a dense hedge. On May 1, leaving Major American reverse at Fort Brown Brown in command at the fort, Taylor made a forced march to Point Isabel. The Mexicans promptly sent men across the river to the rear of Fort Brown, and opened fire together with the guns of Matamoras on that work. Major Brown was first among the killed. Signal guns were fired to recall Taylor. With 2,300 men he turned back on May 6. Meanwhile, 6,000 Mexicans had Palo Alto arrived and taken up a strong position at Palo Alto. On the 8th, Taylor assaulted the superior force confronting him. Two eighteen-pounders and two light batteries made fearful havoc in the closed ranks of the Mexican infantry. The prairie grass between the two armies took fire. Both lines drew back, but soon renewed the fight. Taylor's left was met by cannonade, but the Mexican column was overthrown and the entire force fell back to Resaca de la Palma. The Americans took up their march to Fort Brown. When within three miles of the fort they encountered the Mexicans, strongly posted in Resaca de la Palma, a ravine three hundred feet wide bordered with palmetto trees. Taylor deployed a portion of his force as skirmishers, and a company of dragoons overrode the first Mexican battery. The Americans then advanced their battery to the crest. Resaca de la Palma A regiment charged in column, and, joined by the skirmishers, seized the enemy's artillery. After hard fighting in the chaparral, the Mexicans were put to flight. The Mexicans lost one thousand men, the Americans conceded but one hundred. Refusing an armistice, Taylor crossed the river on May 18, and unfurled the Stars and Stripes on Mexican territory. Another attempted stand of the Invasion of Mexico Mexicans resulted in worse defeat. Arista's retreat became a rout. Of 7,000 men he brought only 2,500 to Linares. The American troops occupied Matamoras, Reinosa and Camargo. The three States of Tamaulipas, Coahuila and Nuevo Leon were annexed to the territory of the Rio Grande. In the interior of Mexico a revolution broke out. General Paredes was made President.

In July, Colonel Philip Kearney, with an American force, marched unopposed Kearney annexes New Mexico from the Arkansas River and took possession of Santa Fé. On August 1, he annexed the State of New Mexico as a Territory of the United States. In May, Captain John C. Fremont, in charge of an exploring expedition in the South, received a message from Secretary of State Buchanan and Senator Benton, whose daughter he had married, suggesting that he should remain in Fremont in California California. Fremont took the hint and returned to Sacramento. There he learned that the Mexican commander was about to take the offensive. He at once assumed command of the American forces, and on June 15 captured Sonoma. Meanwhile Commodores Sloat and Stockton took possession of the coast towns as far as Los Angeles, and, on August 13, held Monterey, the capital of California. Fremont set up a provisional government, placing himself at the head. In the meantime, the United States had sent a company of artillery, which took two hundred days in making the journey around the Horn. Among its members were three future heroes of the American Civil War—Lieutenants Sherman, Halleck and Ord.

The news of these events did not reach Washington until after Congress had Tardy declaration of war declared war on April 26, authorized a call for 50,000 volunteers, and made an appropriation of $10,000,000. Three hundred thousand volunteers responded. Of these some 75,000 were enrolled with the regular army of 40,000. President Polk, on May 11, sent to Congress an aggressive measure, announcing that war existed by the act of Mexico. On May 23, Mexico made her formal declaration of war. General Taylor, with the army of occupation, was ordered to seize and hold points on the Rio Grande.