Question

an essential tool for interpreting a map. its a small box that explains the meaning of all the symbols, colors, and patterns used on the map. for instance, a green area might represent a forest, a blue line a river, and a small square a city. political map map title map key physical map

Explanation:

The description clearly matches the definition of a map key, which explains symbols, colors, and patterns on a map.

Answer:

Map Key