7,000 years ago, Native American History of Corn http://www.nativetech.org/cornhusk/cornhusk.html Native American History of Corn 7,000 years ago, cultivation and selection www.nativetech.org/cornhusk/cornhusk.html http://www.nativetech.org/cornhusk/cornhusk.html corn is 7,000 years ago http://www.nativetech.org/cornhusk/cornhusk.html Native American History of Corn cultivation and selection Native American History of Corn http://www.nativetech.org/cornhusk/cornhusk.html Native American History of Corn teosinte 7,000 years ago, http://www.nativetech.org/cornhusk/cornhusk.html http://www.nativetech.org/cornhusk/cornhusk.html