D Easy I think because all the others are posotive
Well Southeast Asia has lots of islands. So Many ships have to pass from southeast Asia. Many Chinese and Japanese goods go across southeast Asia to Reach Europe. So many of the Southeast Asian countries take advantage of the trade and built many ports. And It helps their economy grow. Just look at Singapore. Singapore is a country the size of one city. But since it location(south east asia) It more of a city port and it one of the wealthiest country in all of Asia.
Answer:
Two primary materials that geologists use as clues to understand Earth's past are the geologic time scale and paleogeographic maps.
Explanation:
The answer is A.
Let me know is it is right....