On the map, the feature that is identified with the letter U is the Silk Road, and the feature that is identified with the letter S is the Genghis Khan's invasion route.
What is map?
A map is the term that is used in showing a representation of relationships between elements of a space, such as regions, items, or themes. Many maps are unchanging, means that they are set up to paper or some other permanent media, whereas another are dynamical or interactive.
In the given map, The Silk Road is represented by the letter U on the map, whereas Genghis Khan's invasion route is represented by the letter S.
Therefore, the correct option for 16 is C and for 17 is B.
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