Mexican-American War The Mexican-American War (1846-1848) marked the first U.S. armed conflict chiefly fought on foreign soil. It pitted a politically divided and militarily unprepared Mexico against the expansionist-minded administration of U.S. President James K. Polk, who believed the United States had a “manifest destiny” to spread across the continent to the Pacific Ocean. A border skirmish along the Rio Grande started off the fighting and was followed by a series of U.S. victories. When the dust cleared, Mexico had lost about one-third of its territory, including nearly all of present-day California, Utah, Nevada, Arizona and New Mexico. When war broke out against Mexico in May 1846, the United States Army numbered a mere 8,000, but soon 60,000 volunteers joined their ranks. The American Navy dominated the sea. The American government provided stable, capable leadership. The economy of the expanding United States far surpassed that of the fledgling Mexican state. Morale was on the American side. The war was a rout. Polk directed the war from Washington, D.C. He sent a 4-prong attack into the Mexican heartland. John Fremont and Stephen Kearny were sent to control the coveted lands of California and New Mexico. Fremont led a group of zealous Californians to declare independence even before word of hostilities reached the West. The "Bear Flag Republic" was not taken seriously, but Fremont and his followers did march to Monterey to capture the Mexican presidio, or fort. By 1847, California was secure. Meanwhile, Kearny led his troops into Santa Fe in August of 1846 causing the governor of New Mexico to flee. The city was captured without a single casualty. Soon he marched his army westward across the desert to join Fremont in California. The attack on Mexico proper was left to two other commanders. Zachary Taylor crossed the Rio Grande with his troops upon Polk's order. He fought Santa Anna's troops successfully on his advance toward the heart of Mexico. Winfield Scott delivered the knockout punch. After invading Mexico at Vera Cruz, Scott's troops marched to the capital, Mexico City. All that remained was negotiating the terms of peace. At home, the Whigs of the north complained bitterly about the war. Many questioned Polk's methods as misleading and unconstitutional. Abolitionists rightly feared that southerners would try to use newly acquired lands to expand slavery. Antiwar sentiment emerged in New England much as it had in the War of 1812. Writer Henry David Thoreau was sentenced to prison for refusing to pay the taxes he knew were used to fund the war effort. His essay, Civil Disobedience, became a standard of peaceful resistance for future activists. The Mexican-American War was formally concluded by the Treaty of Guadalupe-Hidalgo. The United States received the disputed Texan territory, as well as New Mexico territory and California. The Mexican government was paid $15 million — the same sum issued to France for the Louisiana Territory. The United States Army won a grand victory. Although suffering 13,000 killed, the military won every engagement of the war. Mexico was stripped of half of its territory and was not consoled by the monetary settlement. The Spanish American War The Spanish-American War (1898) was a conflict between the United States and Spain that ended Spanish colonial rule in the Americas and resulted in U.S. acquisition of territories in the western Pacific and Latin America. The war originated in the Cuban struggle for independence from Spain, which began in February 1895. Spain's brutally repressive measures to halt the rebellion were graphically portrayed for the U.S. public by several sensational newspapers, and American sympathy for the rebels rose. The growing popular demand for U.S. intervention became an insistent chorus after the unexplained sinking in Havana harbour of the battleship USS Maine (Feb. 15, 1898; see Maine, destruction of the), which had been sent to protect U.S. citizens and property after anti-Spanish rioting in Havana. Spain announced an armistice on April 9 and speeded up its new program to grant Cuba limited powers of self-government, but the U.S. Congress soon afterward issued resolutions that declared Cuba's right to independence, demanded the withdrawal of Spain's armed forces from the island, and authorized the President's use of force to secure that withdrawal while renouncing any U.S. design for annexing Cuba. Spain declared war on the United States on April 24, followed by a U.S. declaration of war on the 25th, which was made retroactive to April 21. The ensuing war was pathetically one-sided, since Spain had readied neither its army nor its navy for a distant war with the formidable power of the United States. Commo. George Dewey led a U.S. naval squadron into Manila Bay in the Philippines on May 1, 1898, and destroyed the anchored Spanish fleet in a leisurely morning engagement that cost only seven American seamen wounded. Manila itself was occupied by U.S. troops by August. The elusive Spanish Caribbean fleet under Adm. Pascual Cervera was located in Santiago harbour in Cuba by U.S. reconnaissance. An army of regular troops and volunteers under Gen. William Shafter (and including Theodore Roosevelt and his 1st Volunteer Cavalry, the “Rough Riders”) landed on the coast east of Santiago and slowly advanced on the city in an effort to force Cervera's fleet out of the harbour. Cervera led his squadron out of Santiago on July 3 and tried to escape westward along the coast. In the ensuing battle all of his ships came under heavy fire from U.S. guns and were beached in a burning or sinking condition. Santiago surrendered to Shafter on July 17, thus effectively ending the war. By the Treaty of Paris (signed Dec. 10, 1898), Spain renounced all claim to Cuba, ceded Guam and Puerto Rico to the United States, and transferred sovereignty over the Philippines to the United States for $20,000,000. The Spanish-American War was an important turning point in the history of both antagonists. Spain's defeat decisively turned the nation's attention away from its overseas colonial adventures and inward upon its domestic needs, a process that led to both a cultural and a literary renaissance and two decades of much-needed economic development in Spain. The victorious United States, on the other hand, emerged from the war a world power with far-flung overseas possessions and a new stake in international politics that would soon lead it to play a determining role in the affairs of Europe. .