<P> In 1525, after Fernão de Magalhães's expedition (1519--1522), Spain under Charles V sent an expedition to colonize the Moluccas islands, claiming that they were in his zone of the Treaty of Tordesillas, since there was not a set limit to the east . García Jofre de Loaísa expedition reached the Moluccas, docking at Tidore . The conflict with the Portuguese already established in nearby Ternate was inevitable, starting nearly a decade of skirmishes . An agreement was reached only with the Treaty of Zaragoza (1529), attributing the Moluccas to Portugal and the Philippines to Spain . </P> <P> In 1530, John III organized the colonization of Brazil around 15 capitanias hereditárias ("hereditary captainships"), that were given to anyone who wanted to administer and explore them, to overcome the need to defend the territory, since an expedition under the command of Gonçalo Coelho in 1503, found the French making incursions on the land . That same year, there was a new expedition from Martim Afonso de Sousa with orders to patrol the whole Brazilian coast, banish the French, and create the first colonial towns: São Vicente on the coast, and São Paulo on the border of the altiplane . From the 15 original captainships, only two, Pernambuco and São Vicente, prospered . With permanent settlement came the establishment of the sugar cane industry and its intensive labor demands which were met with Native American and later African slaves . </P> <P> In 1534 Gujarat was occupied by the Mughals and the Sultan Bahadur Shah of Gujarat was forced to sign the Treaty of Bassein (1534) with the Portuguese, establishing an alliance to regain the country, giving in exchange Daman, Diu, Mumbai and Bassein . In 1538 the fortress of Diu is again surrounded by Ottoman ships . Another siege failed in 1547 putting an end to the Ottoman ambitions, confirming the Portuguese hegemony . </P> <P> In 1542 Jesuit missionary Francis Xavier arrived in Goa at the service of king John III of Portugal, in charge of an Apostolic Nunciature . At the same time Francisco Zeimoto, António Mota, and other traders arrived in Japan for the first time . According to Fernão Mendes Pinto, who claimed to be in this journey, they arrived at Tanegashima, where the locals were impressed by firearms, which would be immediately made by the Japanese on a large scale . In 1557 the Chinese authorities allowed the Portuguese to settle in Macau through an annual payment, creating a warehouse in the triangular trade between China, Japan and Europe . In 1570 the Portuguese bought a Japanese port where they founded the city of Nagasaki, thus creating a trading center for many years was the port from Japan to the world . </P>

How did the portugese use geographic factors to help them control the spice trade