What are the differences between political maps and special purpose maps of ethnic, economic, and environmental patterns?

A political map outlines boundaries, marks cities/states/countries. The other maps each serve their own individual purpose for example, an ethnic map identifies the distribution of ethnicities throughout a region and an environmental pattern map will focus on patterns specifically.

Explanation:

i'm sure the answer you are looking for would be

a. an ice age

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a. i. only is correct.