Há 4 dias · In the winter of 1845–46, the federally commissioned explorer John C. Frémont and a group of armed men appeared in Alta California. After telling the Mexican governor and the American Consul Larkin he was merely buying supplies on the way to Oregon, he instead went to the populated area of California and visited Santa Cruz and the Salinas Valley , explaining he had been looking for a seaside home for his mother. 
- April 25, 1846 – February 2, 1848, (1 year, 9 months, 1 week and 1 day)
- U.S. victory, Treaty of Guadalupe Hidalgo, Mexican recognition of U.S. sovereignty over Texas (among other territories), End of the conflict between Mexico and Texas
- Texas, New Mexico, California; Northern, Central, and Eastern Mexico; Mexico City
- Mexican Cession
Há 3 dias · The California Gold Rush (1848–1855) was a gold rush that began on January 24, 1848, when gold was found by James W. Marshall at Sutter's Mill in Coloma, California.  The news of gold brought approximately 300,000 people to California from the rest of the United States and abroad. 
Há 6 dias · By the late nineteenth century, the United States had become a leading global industrial power, building on new technologies (such as the telegraph and steel ), an expanding railroad network, and abundant natural resources such as coal, timber, oil, and farmland, to usher in the Second Industrial Revolution .
- Reconstruction era, Nadir of American race relations, Third Great Awakening, Second Industrial Revolution, Gilded Age, Progressive Era, Migrations:American frontier, Great Migration
- United States
- Reconstruction Amendments, Farmers' Movement, First transcontinental railroad, Formation of the KKK, Enforcement Acts, Compromise of 1877, Second Industrial Revolution, American Federation of Labor, Spanish-American War, Square Deal, Banana Wars, Entry into WWI
- Andrew Johnson, Ulysses S. Grant, Rutherford B. Hayes, James A. Garfield, Chester A. Arthur, Grover Cleveland, William McKinley, Theodore Roosevelt, William Howard Taft, Woodrow Wilson
Há 4 dias · By 1845, the province of Alta California had a non-native population of about 1,500 Spanish and Latin American-born adult men along with about 6,500 women and their California-born children (who became the Californios). These Spanish-speakers lived mostly in the southern half of the state from San Diego north to Santa Barbara.
Há 3 dias · In July 1845, a Texas convention ratified annexation, and thereafter voters approved it. In December 1845, Texas became the 28th state. However Mexico had broken diplomatic relations with the United States on passage of the joint resolution in March 1845; now annexation escalated tensions as Mexico had never recognized Texan independence.
Há 3 dias · The Southern Baptists met at the First Baptist Church of Augusta in May 1845. At this meeting, they created a new convention, the Southern Baptist Convention. They elected William Bullein Johnson (1782–1862) as its first president. He had served as president of the Triennial Convention in 1841. Formation and separation of black Baptists