How much do you about Christopher Columbus?  

Christopher Columbus was the voyager who discovered USA in 1492. Before discovering USA by Columbus, tribal people (Red Indians) were living there. After his discover, people of different countries of Europe (specially UK) migrated in USA. For doing the jobs in agricultural lands and mining fields, African people were taken there. Let us know more about Columbus:Christopher Columbus (c. 1451 – 20 May 1506) was a Genoese navigator, colonizer and explorer whose voyages across the Atlantic Ocean led to general European awareness of the American continents in the Western Hemisphere. Although not the first to reach the Americas from Europe—he was preceded by the Norse, led by Leif Ericson, who built a temporary settlement 500 years earlier at L'Anse aux Meadows[1]— Columbus initiated widespread contact between Europeans and indigenous Americans. With his four voyages of discovery and several attempts at establishing a settlement on the island of Hispaniola, all funded by Isabella I of Castile, he initiated the process of Spanish colonization which foreshadowed general European colonization of the "New World." (The term "pre-Columbian" is usually used to refer to the peoples and cultures of the Americas before the arrival of Columbus and his European successors.)
His initial 1492 voyage came at a critical time of growing national imperialism and economic competition between developing nation states seeking wealth from the establishment of trade routes and colonies. In this sociopolitical climate, Columbus's far-fetched scheme won the attention of Isabella I of Castile. Severely underestimating the circumference of the Earth, he estimated that a westward route from Iberia to the Indies would be shorter and more direct than the overland trade route through Arabia. If true, this would allow Crown of Castile entry into the lucrative spice trade — heretofore commanded by the Arabs and Italians. Following his plotted course, he instead landed within the Bahamas Archipelago at a locale he named San Salvador. Mistaking the North-American island for the East-Asian mainland, he referred to its inhabitants as "Indios".
Academic consensus is that Columbus was born in Genoa, though there are other theories. The name Christopher Columbus is the Anglicisation of the Latin Christophorus Columbus. The original name in 15th century Genoese language was Christoffa[2] Corombo[3] (pronounced [kri'?t?ffa ku'?u?bu]) The name is rendered in modern Italian as Cristoforo Colombo, in Portuguese as Cristóvão Colombo (formerly Christovam Colom), in Galician as Cristovo Colón and in Castilian as Cristóbal Colón.
The anniversary of Columbus's 1492 landing in the Americas is observed as Columbus Day on October 12 in Spain and throughout the Americas, except that in the United States it is observed on the second Monday in October.