The King of Portugal, zealous to retain his monopoly of African and eastern exploration, and the pious sovereigns of Spain, desirous to build their colonial empire on solid and unquestioned foundations, alike appealed to the Pope for a definition of their rights and a confirmation of their claims. The world seemed big enough and with a spacious liberality Pope Alexander VI granted Ferdinand and Isabella the right to explore and to take possession of all the hitherto unknown and heathen parts of the world west of a certain line drawn north and south in the Atlantic Ocean. East of that line the rights of Portugal, resting on their explorations and the grants of earlier popes, were confirmed. The documentary history of the Philippines begins with the Demarcation Bulls and the treaty of Tordesillas, for out of them grew Magellan's voyage and the discovery of the islands; and without them the Philippines would no doubt have been occupied by Portugal and later have fallen a prey to the Dutch as did the Moluccas. King John of Portugal was dissatisfied with the provisions of the Demarcation Bulls. He held that the treaty between Spain and Portugal in 1479 had resigned to Portugal the field of oceanic discovery, Spain retaining only the Canaries; and he felt that a boundary line only a hundred leagues west of the Azores not only was an infringement on his rights but would be a practical embarrassment in that it would not allow his sailors adequate sea room for their African voyages. His first contention was hardly valid; the second, however, was reasonable and, as Columbus had estimated the distance from the Canaries to the new islands at over nine hundred leagues, the Catholic sovereigns were disposed to make concessions. By the treaty of Tordesillas, June 7, 1494, it was agreed that the Demarcation Line should be drawn three hundred and seventy leagues west of the Cape Verde Islands. [4] This treaty accepted the principle of the Papal arbitration but shifted the boundary to a position supposed to be half-way between the Cape Verde Islands and the newly discovered islands of Cipangu and Antilia. [5] Neither in the Papal Bulls nor in the Treaty of Tordesillas was there any specific reference to an extension of the Line around the globe or to a division of the world. The arrangement seems to have contemplated a free field for the exploration and conquest of the unknown parts of the world, to the eastward for Portugal, and to the westward for Spain. If they should cross each other's tracks priority of discovery would determine the ownership. [6] The suggestion of the extension of the line around the globe and of the idea that Spain was entitled to what might be within the hemisphere set off by the Demarcation Line and its extension to the antipodes does not appear until the time of Magellan, and it is then that we first meet the notion that the Pope had divided the world between Spain and Portugal like an orange. [7]