Cahokia's rise parallels onset of corn agriculture
UNIVERSITY OF ILLINOIS AT URBANA-CHAMPAIGN, NEWS BUREAU SHARE PRINT E-MAIL IMAGE: CORN CULTIVATION BEGAN IN THE VICINITY OF THE CITY OF CAHOKIA BETWEEN A.D. 900 AND 1000, RESEARCHERS REPORT IN A NEW STUDY. ITS ARRIVAL MAY HAVE CONTRIBUTED TO THE ABRUPT... view more CREDIT: GRAPHIC BY DIANA YATES CHAMPAIGN, Ill. -- Corn cultivation spread from Mesoamerica to what is now the American Southwest by about 4000 B.C., but how and when the crop made it to other parts of North America is still a subject of debate. In a new study, scientists report that corn was not grown in the ancient metropolis of Cahokia until sometime between A.D. 900 and 1000, a relatively late date that corresponds to the start of the city's rapid expansion. The findings are published in the journal American Antiquity . The research team determined the age of charred corn kernels found in homes, shrines and other archaeolog...