Greene County, Administrative division in western Illinois, United States
Greene County is an administrative division in western Illinois with agricultural land, small towns, and the Illinois River running along its western edge. The county seat of Carrollton houses the main courthouse and government offices that serve the local area.
The county was established in 1821 and named after Nathanael Greene, a general from the American Revolutionary War. Several other counties were later created from land that originally belonged to this area.
The land holds archaeological sites that reveal how different groups of people lived and settled here over thousands of years. These places help visitors understand the deeper roots of the region and its long human story.
Visitors can reach Carrollton, where main services and information are available, and explore the different towns and historical sites from there. The warmer months are best for exploring, as roads and paths are easiest to navigate.
The area experienced significant changes in its boundaries as portions were separated to form new counties over a relatively short period. This pattern shows how the political map of this part of the state shifted and evolved in its early years.
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