Explanation: The Portuguese ensured that they would own the lands to the east of the demarcation line to maintain their hold on India. Eliminate (A) because Portugal knew that India was not the same land mass as the New World. Eliminate (B) because Portugal was not interested in waging war against the Mamelukes in Egypt. Finally, you can eliminate (C) as well because the Portuguese never expressed any imperial interest in Mexico. Choice (D) is the best answer.