Chiefdom of Coosa

The Coosa chiefdom was a powerful Native American paramount chiefdom near what are now Gordon and Murray counties in Georgia, in the United States. It was inhabited from about 1400 until about 1600, and dominated several smaller chiefdoms. The total population of Coosa's area of influence, reaching into present-day Tennessee and Alabama, has been estimated at 50,000.

Hernando de Soto and his conquistadors visited Coosa on their expedition through the Southeast United States in 1539–1541, as did participants in Tristán de Luna's expedition in 1560, and Juan Pardo's 1566–1568 expedition. The Europeans recorded descriptions and impressions of the various chiefdoms they visited, describing Coosa as a series of communities and fertile gardens containing much food, rather than a town or city.

Coosa was also the name of one of the four mother towns of the Muscogee Creek confederacy.

The Coosa chiefdom was centered along the Coosawattee River in present-day Gordon and Murray counties in northwestern Georgia. The capital of Coosa, as a modern archaeological site it is known as "Little Egypt", had a large plaza and three platform mounds, as well as residential dwellings. Researchers have found various Mississippian culture pottery types, the most substantial of which reflect the site's Middle and Late South Appalachinian Mississippian culture(a regional variation of the Mississippian culture) habitation from 1300 to 1600.Archeologists have defined these as the Dallas, Lamar, and Mouse Creek phases of pottery. These type variations could indicate that the chiefdom underwent three archaeological phases and changes in culture, each with distinct pottery and artifact styles. Only one other village had a mound; the others associated with the chiefdom had only residential dwellings.

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