Explanation: The color associated with Darius I touches the Greek city-states, (D). Choice (A) is incorrect because, according to the map, Cyrus II never gained land in Egypt. However, the map shows the land gained by Cambyses II exclusively around Egypt and the Levant. The Hindu Kush borders the Indian subcontinent, so eliminate (B). The Persians’ earliest land is on the Persian side of the Persian Gulf, not the Arabian side. Get rid of (C). Choice (D) is the answer.