Circa 3000 B.C. Corn was being grown in Central Mexico
Circa 2100 B.C. Corn was being cultivated in modern day New Mexico and Arizona.
Circa 1000 B.C. Native American migrated to North America bringing corn.
Columbus brought corn back from New World to Spain in 1492.
The first pictures of corn in Europe were made by Giovanni Martini de Udine
Circa 1575 Corn spread to Western China, the Philippines and the East Indies.