Complex sentence: In 1955, Rudolf Flesch criticized the "Dick and Jane" series in his book "Why Johnny Can't Read", and the push for multiculturalism, and stronger presentation of other races and cultures was partially a reaction to the cultural homogeneity of the series.
Split into simpler sentences: In 1955, Rudolf Flesch criticized the "Dick and Jane" series in his book "Why Johnny Can't Read". The push for multiculturalism and stronger presentation of other races and cultures was partially a reaction to the cultural homogeneity of the series.