A choropleth map (from Greek χῶρος "area/region" and πλῆθος "multitude") is a type of thematic map in which areas are shaded or patterned in proportion to a statistical variable that represents an aggregate summary of a geographic characteristic within each area, such as population density or per-capita income.
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Bleeding Kansas, Bloody Kansas, or the Border War was a series of violent civil confrontations in Kansas Territory, and to a lesser extent in western Missouri, between 1854 and 1859. It emerged from a political and ideological debate over the legality of slavery in the proposed state of Kansas.
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To unite such a vast empire, Persian rulers relied on sophisticated infrastructure, centralized government, and a well-developed bureaucracy.
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There are several influences in US government from Greece. The type of government, democracy, comes from Greece. There are also many government buildings in the US that are inspired by Greek government buildings.