He consulted San Martín, his official astronomer, who tried to accommodate him; he took measurements, consulted with the pilots, and concluded that they might have strayed into Portuguese territory as defined by the Treaty of Tordesillas. The idea appalled Magellan, under orders from King Charles to avoid Portuguese waters and, at the same time, to demonstrate that the Spice Islands lay comfortably within the Spanish realm. Now it appeared the fleet had already sailed beyond the line of demarcation. Magellan realized he might be sailing halfway around the world only to demonstrate the opposite
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