This article consists of three parts and an abstract. In the first part, I have reported on several English articles that have been written on the subject of teaching the theory of evolution and ways to improve it in English-speaking countries. This part actually provides a background for the next two parts. In the second part, I have reviewed and reported on Gerald Skoog's article. In this article, Skoog has provided an account of the coverage of the subject of evolution, and especially human evolution, in American textbooks during the twentieth century. The review of Skoog's article provides the necessary premises for a comparison between it and the article I have previously published. Therefore, in the third part, I have recalled the main points of the previous article and also compared it with Skoog's article.Of course, I have also looked at Persian-language documents. Overall, I have shown that the emergence of opposition to the theory of evolution in these two societies, Iran and America, is directly related to cultural, political, and religious events. Finally, it is suggested that in order to further prepare the ground for a proper confrontation with the theory of evolution, it is necessary to rethink the correlation between the beliefs of individuals in society and scientific concepts.