blog postsCahokia's rise parallels onset of corn agricultureMay 14, 2020 9:15 am by Diana YatesResearchShare on FacebookTweetEmailImagesCorn cultivation began in the vicinity of the Cahokia between A.D. 900 and 1000, researchers report. Its arrival may have contributed to the abrupt rise of this ancient metropolis in and around present-day St. Louis.Share on FacebookTweetEmail