<Tr> <Th_colspan="3"> Portuguese and Spanish empires (anachronous world maps) </Th> </Tr> <Tr> <Td> Portuguese Empire </Td> <Td> Spanish Empire alongside Iberian Union </Td> <Td> Iberian Union (1581--1640) </Td> </Tr> <P> The treaty was historically important in dividing Latin America, as well as establishing Spain in the western Pacific until 1898 . However, it quickly became obsolete in North America, and later in Asia and Africa, where it affected colonization . It was ignored by other European nations, and with the decline of Spanish and Portuguese power, the home countries were unable to hold many of their claims, much less expand them into poorly explored areas . Thus, with sufficient backing, it became possible for any European state to colonize open territories, or those weakly held by Lisbon or Madrid . With the fall of Malacca to the Dutch, the VOC (Dutch East India Company) took control of Portuguese possessions in Indonesia, claiming Western New Guinea and Western Australia, as New Holland . Eastern Australia remained in the Spanish half of the world until claimed for Britain by James Cook in 1770 . The attitude towards the treaty that other governments had was expressed in a statement attributed to France's King Francis I, "Show me Adam's will!" </P> <P> In January 13, 1750, King John V of Portugal and Ferdinand VI of Spain signed the Treaty of Madrid, in which both parts sought to establish the borders between Brazil and Spanish America, admitting that the Treaty of Tordesillas, as it had been envisioned in 1494 had been superseded, and was considered void . Spain was acknowledged sovereignty over the Philippines, while Portugal would get the territory of the Amazon River basin . Portugal would relinquish the colony of Sacramento, on the northern bank of the River Plata in modern - day Uruguay, while getting the territory of the Seven Missions . </P>

Who was most affected by the provisions of the line of demarcation 1493
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