Later, the remaining Illiniwek were pushed out onto the Great Plains, alike many other tribes and were broken down as several peoples fought for adequate land. The Kispoko soon after merged with the Shawnee. The largely Algonquian-ized Chisca split away and returned to Kentucky, taking several of the Illiniwek peoples with them (although, some remained) and became known as the Kispoko. During the French & Indian War, English influence spread deep into and destabilized the Illinois Colony. In the aftermath of the Yamasee War (1715вЂ“1717) in the early 18th century, the French also offered aid to a breakaway group of Yuchi known as the Chisca, who had once resided in southeast Kentucky and had them migrate into Illiniwek territory. The Miami & Mascouten subtribes merged back into two-the Miami & Wea- & returned to the east in the 1690s. The French, who arrived during the 1670sвЂ“80s and established the Illinois colony, helped to stabilize the region. The Beaver Wars also caused a secondary conflict in the greater Wisconsin area known as the Second Fauk War, which pushed the ancestors of the Lakota/ Dakota out onto the plains & destabilized the Dakotas. The known tribes were the Miami, Mascouten, Wea, Atchatchakangouen, Pepicokia, Mengakonkia, Pinakashaw & Kilatika. Michigan-spread throughout the western Great Lakes & Upper Mississippi region, living wherever they could. Several migrating groups of Miami & Mascouten-the oldest known inhabitants of Indiana & S.

During the Beaver Wars period of the 17th century, the Iroquois pushed through and briefly conquered Ohio, Indiana & Southern Michigan, forcing several peoples out of those regions. The Ho-Chunk, a Siouan people of the Chiwere subgroup & the alleged oldest continuous Siouan society, were also believed to claim some land north of the Rock River. The next major power in the region was the Illiniwek Confederation, a political alliance among several tribes. Cahokians might have also outstripped their water supply caused in part by large-scale deforestation, and the period of global cooling or mini Ice Age of the era might have caused recurring famines and migration. A severe earthquake that damaged Monk's Mound at that time might have challenged the supernatural powers claimed by the Cahokian chiefs. That civilization vanished circa 1400вЂ“1500 for unknown reasons. Radiating out from Cahokia for many miles were tilled fields that supplied the corn for the urban dwellers. This Mississippi valley city of Cahokia is estimated to have had a population of about 16000 to 20000, the most concentrated population north of the Rio Grande until the late 1700s. Built around 1050 AD by an immense marshaling of human labor, this huge earth-work faced the site of a palisaded city that contained more than one hundred small artificial mounds marking burial sites.

A gigantic mound, known as Monks Mound near Cahokia, is about the same height from its base as the Pyramid of Giza. Several burial mounds and adobe structures were created in Southern Illinois across the Mississippi River from St. Cahokia, urban center of the pre-Columbian Mississippian cultureД¬ahokia, the urban center of the pre-Columbian Mississippian culture, was located near present-day Collinsville, Illinois.

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