1847, February 22, Battle of Buena Vista.
1847, September 14, capture of the city of Mexico by the United States Army.
1851, August 27, the Yacht "America" won the international cup race, at Cowes, England.
1858, August 16, the Old World and the New World connected by telegraphic cable.
1859, October 18, capture of John Brown, at Harper's Ferry, Virginia.
1860, December 20, South Carolina seceded from the Union.
1861, April 12, Fort Sumter, South Carolina, bombarded.
1861, April 15, President Lincoln issued his first call for volunteers.
1861, July 21, Battle of Bull Run.
1862, March 9, Fight in Hampton Roads, Virginia, between the "Monitor" and the "Merrimac."