What does a map legend provide?

A map legend plays a critical role in understanding how to read a map effectively. Specifically, it provides an interpretation of the symbols, abbreviations, and color schemes used throughout the map. This is essential because maps often utilize various representations to convey complex information succinctly. For example, a legend might explain that a blue line represents rivers, while green areas denote parks or forests. Without this guide, users could misinterpret the information depicted on the map.

The other choices do not accurately capture the primary function of a map legend. A legend does not provide information about distances, a chronological order of events, or a list of countries. Instead, it focuses on clarifying what each symbol means, ensuring that the map can be understood correctly.