Leif Erikson
Leif Erikson or Leif Ericson ( 970 – c. 1020) was a Norse explorer from Iceland. He was the first known European to have set foot on continental North America (excluding Greenland), before Christopher Columbus. According to the Sagas of Icelanders, he established a Norse settlement at Vinland, tentatively identified with the Norse L'Anse aux Meadows on the northern tip of Newfoundland in modern-day Canada. Later archaeological evidence suggests that Vinland may have been the areas around the Gulf of St. Lawrence and that the L'Anse aux Meadows site was a ship repair station.
Maritime history
Christopher Columbus was a navigator and maritime explorer who is one of several historical figures credited as the discoverer of the Americas. It is generally believed that he was born in Genoa, although other theories and possibilities exist. Columbus' voyages across the Atlantic Ocean began a European effort at exploration and colonization of the Western Hemisphere. While history places great significance on his first voyage of 1492, he did not actually reach the mainland until his third voyage in 1498. Likewise, he was not the earliest European explorer to reach the Americas, as there are accounts of European transatlantic contact prior to 1492. Nevertheless, Columbus's 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. Therefore, the period before 1492 is known as Pre-Columbian.