sentences:  The cereal, and the Sunny Jim character, achieved wide success in Britain, at its peak in 1930 selling 12.5 million packages in one year.Kellogg began the breakfast cereal marketing and introduced the first in-box prize in the early 1900s.Quaker Oats entered the market with Puffed Rice and Wheat Berries it had introduced at the 1904 World Fair, with raw grains shot with hot compressed air from tubes, popping up to many times their size.