ANSWERS

 Here are the list of cereals from Monday and the correct date they were introduced.

Alpha-Bits  1957

Cheerios  1941

Cocoa Puffs  1958

Corn Flakes  1894

Crispix  1983

Frosted Flakes  1952

Frosted Mini-Wheats  1969

Grape Nuts Flakes  1897

Kix  1937

Life  1961

Lucky Charms  1964

Shredded Wheat  1893

Special K  1955

Trix  1954

Wheaties  1921

I'd say that they must have discovered sugar in the 1950's.