Kirishitan - The Line of Demarcations Between Portugal and Spain

The Line of Demarcations Between Portugal and Spain

Religion was an integral part of the state and evangelization was seen as having both secular and spiritual benefits for both Portugal and Spain. Wherever these powers attempted to expand their territories or influence, missionaries would soon follow. By the Treaty of Tordesillas, the two powers divided the world between them into exclusive spheres of influence, trade and colonization. Although at the time of the demarcation, neither nation had any direct contact with Japan, that nation fell into the sphere of the Portuguese.

The countries disputed the attribution of Japan. Since neither could colonize it, the exclusive right to propagate Christianity in Japan meant the exclusive right to trade with Japan. Portuguese-sponsored Jesuits under Alessandro Valignano took the lead in proselytizing in Japan over the objection of the Spaniards. The fait accompli was approved in Pope Gregory XIII's papal bull of 1575, which decided that Japan belonged to the Portuguese Diocese of Macau. In 1588, the diocese of Funai (Nagasaki) was founded under Portuguese protection.

In rivalry with the Jesuits, Spanish-sponsored mendicant orders entered into Japan via Manila. While criticizing Jesuit activities, they actively lobbied the Pope. Their campaigns resulted in Pope Clement VIII's decree of 1600, which allowed Spanish friars to enter Japan via the Portuguese Indies, and Pope Paul V's decree of 1608, which abolished the restrictions on the route. The Portuguese accused Spanish Jesuits of working for their homeland instead of their patron. The power struggle between Jesuits and mendicant orders caused a schism within the diocese of Funai. Furthermore, mendicant orders tried in vain to establish a diocese on the Tohoku region that was to be independent from the Portuguese one.

The Roman Catholic world order was challenged by the Netherlands and England. Theoretically, it was repudiated by Grotius's Mare Liberum. In the early 17th century, Japan built trade relations with the Netherlands and England. Although England withdrew from the operations in ten years under James I due to lack of profitability, the Netherlands continued to trade with Japan and became the only European country that maintained trade relations with Japan until the 19th century. As trade competitors, the Protestant countries engaged in a negative campaign against Catholicism, and it subsequently affected shogunate policies toward the Iberian kingdoms.

Portugal's and Spain's colonial policies were also challenged by the Roman Catholic Church itself. The Vatican founded the Congregatio de Propaganda Fide in 1622 and attempted to separate the churches from the influence of the Iberian kingdoms. However, it was too late for Japan. The organization failed to establish staging points in Japan.