1853 : SOUTHERN U.S. BORDER ESTABLISHED James Gadsden, the U.S. minister to Mexico, and General Antonio Lopez de Santa Anna, the president of Mexico, sign the Gadsden Purchase in Mexico City. The treaty settled the dispute over the location of the Mexican border west of El Paso, Texas, and established the final boundaries of the southern United States. For the price of $15 million, later reduced to $10 million, the United States acquired approximately 30,000 square miles of land in what is now southern New Mexico and Arizona. Jefferson Davis, the U.S. secretary of war under President Franklin Pierce, had sent Gadsden to negotiate with Santa Anna for the land, which was deemed by a group of political and industrial leaders to be a highly strategic location for the construction of the southern transcontinental railroad. In 1861, the "big four" leaders of western railroad construction--Collis P. Huntington, Leland Stanford, Mark Hopkins, and Charles Crocker--established the Southern Pacific branch of the Central Pacific Railroad. 1916 : RASPUTIN MURDERED Grigory Rasputin, a self-fashioned Russian holy man, is murdered by Russian nobles eager to end his sway over the royal family. Rasputin won the favor of Czar Nicholas II and Czarina Alexandra through his ability to stop the bleeding of their hemophiliac son, Alexei. Although the Siberian-born peasant was widely criticized for his lechery and drunkenness, he exerted a powerful influence on the ruling family of Russia. He particularly influenced the czarina, and when Nicholas departed to lead Russian forces in World War I, Rasputin effectively ruled Russia through her In the early hours of December 30, 1916, a group of nobles lured Rasputin to Yusupovsky Palace, where they attempted to poison him. Seemingly unaffected by the large doses of poison placed in his wine and food, he was finally shot at close range and collapsed. A minute later he rose, beat one of his assailants, and attempted to escape from the palace grounds, where he was shot again. Rasputin, still alive, was then bound and tossed into a freezing river. A few months later, the imperial regime was overthrown by the Russian Revolution. 1922 – U.S.S.R. ESTABLISHED In post-revolutionary Russia, the Union of Soviet Socialist Republics (USSR) is established, comprising a confederation of Russia, Belorussia, Ukraine, and the Transcaucasian Federation (divided in 1936 into the Georgian, Azerbaijan, and Armenian republics). Also known as the Soviet Union, the new communist state was the successor to the Russian Empire and the first country in the world to be based on Marxist socialism. During the Russian Revolution of 1917 and subsequent three-year Russian Civil War, the Bolshevik Party under Vladimir Lenin dominated the soviet forces, a coalition of workers' and soldiers' committees that called for the establishment of a socialist state in the former Russian Empire. In the USSR all levels of government were controlled by the Communist Party, and the party's politburo, with its increasingly powerful general secretary, effectively ruled the country. Soviet industry was owned and managed by the state, and agricultural land was divided into state-run collective farms. In the decades after it was established, the Russian-dominated Soviet Union grew into one of the world's most powerful and influential states and eventually encompassed 15 republics--Russia, Ukraine, Georgia, Belorussia, Uzbekistan, Armenia, Azerbaijan, Kazakhstan, Kyrgyzstan, Moldova, Turkmenistan, Tajikistan, Latvia, Lithuania, and Estonia. In 1991, the Soviet Union was dissolved following the collapse of its communist government.