Title: Portugal–Spain relations
Content:  Portugal's copy of the Treaty of Tordesillas (1494) divided the New World between Portugal and Castile. During the 15th century, Portugal built increasingly large fleets of ships and began to explore the world beyond Europe, sending explorers to Africa and Asia. Castile followed suit decades later. Following the first Spanish voyage of Christopher Columbus to the Caribbean in 1492, both states began acquiring territory in the New World. As a result of the 1494 Treaty of Tordesillas, Portugal acquired its most potentially important colony, Brazil (much of the South American continent), as well as a number of possessions in Africa and Asia, while Castile took the rest of South America and much of the North American continent as well as a number of possessions in Africa, Oceanía and Asia as the important colony of the Philippines. This line of demarcation was about halfway between the Cape Verde Islands (already Portuguese) and the islands claimed for Castile by Columbus on his first voyage. Although the Treaty of Tordesillas attempted to clarify their empires, many subsequent treaties were needed to establish the modern boundaries of Brazil and the 1529 Treaty of Zaragoza was needed to demarcate their Asian possessions.
Title: Portugal–South Africa relations
Content:  The Portuguese explored the coasts of South Africa in the late 15th century, and nominally claimed them as their own with the erecting of padrões (large stone cross inscribed with the coat of arms of Portugal placed there as part of a land claim). Bartolomeu Dias did so in 1486, and Vasco da Gama recorded a sighting of the Cape of Good Hope in 1497, en route to India.
Title: Spanish Empire
Content:  of Portugal had an advantage over the Crown of Castile, having earlier retaken territory from the Muslims. Following Portugal's earlier completion of the reconquest and its establishment of settled boundaries, it began to seek overseas expansion, first to the port of Ceuta (1415) and then by colonizing the Atlantic islands of Madeira (1418) and the Azores (1427–1452); it also began voyages down the west coast of Africa in the fifteenth century. Its rival Castile laid claim to the Canary Islands (1402) and retook territory from the Moors in 1462. The Christian rivals, Castile and Portugal, came to formal agreements over the division of 
Title: Pedro Álvares Cabral
Content:  Cabral claimed it for the Portuguese Crown. He explored the coast, realizing that the large land mass was probably a continent, and dispatched a ship to notify King Manuel I of the new territory. The continent was South America, and the land he had claimed for Portugal later came to be known as Brazil. The fleet reprovisioned and then turned eastward to resume the journey to India. A storm in the southern Atlantic caused the loss of several ships, and the six remaining ships eventually rendezvoused in the Mozambique Channel before proceeding to Calicut in India. Cabral was originally successful in negotiating trading rights, but Arab merchants 
Title: History of Portugal (1415–1578)
Content:  and Spain divided the world into two parts, Spain claiming all non-Christian lands west of a north–south line 370 leagues west of the Azores, Portugal claiming all non-Christian lands east of that line. ; 1495 — Voyage of João Fernandes, the Farmer, and Pedro Barcelos to Greenland. During their voyage they discovered the land to which they gave the name of Labrador (lavrador, farmer) ; 1494 — First boats fitted with cannon doors and topsails. ; 1498 — Vasco da Gama led the first fleet around Africa to India, arriving in Calicut. ; 1498 — Duarte Pacheco Pereira explores the South Atlantic and the South American 
Title: Francisco Xavier de Mendonça Furtado
Content:  extensive struggles between Spain and Portugal regarding each empire's rightful ownership of South American territory. In theory, the matter was resolved under the Treaty of Tordesillas signed by both nations in 1494. To settle previous disputes and in anticipation of any further discoveries, the treaty made a delineation along a meridian 370 leagues (or 1100 nautical miles) west of the Cape Verde islands with Spain being entitled to lands to its west and those to the east being Portugal's. On the South American continent, the treaty gave a tiny section to Portugal, then called "Land of the Holy Cross" (Portuguese: Terra da Santa Cruz), now the eastern part of modern-day Brazil. Observance of 
Title: South America
Content:   In 1494, Portugal and Spain, the two great maritime European powers of that time, on the expectation of new lands being discovered in the west, signed the Treaty of Tordesillas, by which they agreed, with the support of the Pope, that all the land outside Europe should be an exclusive duopoly between the two countries.  The treaty established an imaginary line along a north–south meridian 370 leagues west of the Cape Verde Islands, roughly 46° 37' W. In terms of the treaty, all land to the west of the line (known to comprise most of the South American soil) would belong to Spain, and all land to the east, to Portugal. As 
Title: History of Portugal
Content:  his brother Diogo; Duarte Pacheco Pereira (author of the Esmeraldo); nine chaplains; and some 1,200 men. From Cape Verde, they sailed southwest across the Atlantic. On 22 April 1500, they caught sight of land in the distance. They disembarked and claimed this new land for Portugal. This was the coast of what would later become the Portuguese colony of Brazil. The real goal of the expedition, however, was to open sea trade to the empires of the east. Trade with the east had effectively been cut off since the Conquest of Constantinople in 1453. Accordingly, Cabral turned away from exploring the coast of the new land 
Title: Conquistador
Content:  Brazil was claimed by Portugal in April 1500, on the arrival of the Portuguese fleet commanded by Pedro Álvares Cabral. The Portuguese encountered natives divided into several tribes. The first settlement was founded in 1532. Some European countries, especially France, were also sending excursions to Brazil to extract brazilwood. Worried about the foreign incursions and hoping to find mineral riches, the Portuguese crown decided to send large missions to take possession of the land and combat the French. In 1530, an expedition led by Martim Afonso de Sousa arrived to patrol the entire coast, ban the French, and to create the first colonial 
Title: History of South America
Content:  an exclusive duopoly between the two countries. The treaty established an imaginary line along a north–south meridian 370 leagues west of Cape Verde Islands, roughly 46° 37' W. In terms of the treaty, all land to the west of the line (which is now known to include most of the South American soil), would belong to Spain, and all land to the east, to Portugal. Because accurate measurements of longitude were not possible at that time, the line was not strictly enforced, resulting in a Portuguese expansion of Brazil across the meridian. In 1498, during his third voyage to the Americas, Christopher Columbus sailed near the Orinoco Delta 

Question: who claimed land in south america for portugal?
Answer: John II of Portugal.