Univariate choropleth maps show only one variable distributed across an area or region. The above map plots the differences in terms used to say "soda" across the United States. While much of the country calls those fizzy drinks "pop," it is also called "coke" more in the South, just "soda" in certain areas, and some places have made up their own unique terms for soda. The map shows just this one variable on a map of the USA in choropleth map form.
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