Final answer:
The purpose of a small-scale map with various colors and boundary lines is to represent the division of land into separate political units and to visually guide understanding of political geography.
Step-by-step explanation:
The purpose of a small-scale map with a legend that includes various colors and boundary lines indicating political borders is to represent and explain the division of land into separate political units, such as cities, states, or countries.
Such maps are useful in displaying extensive areas allowing for a broader perspective, albeit with less detail. The colors and boundary lines on the map help in identifying the distinct political regions, providing a visual guide to understand political geography.
These representations may include both man-made boundaries, like those agreed upon by nations, states, and cities, and natural borders, such as rivers and mountain ranges that often serve as demarcations between political entities.