Answer:During the Cultural Revolution in China, Mao Zedong mobilized groups of devoted young people who called themselves "Red Guards" to carry out his new program. Mao sought to enforce communist dogma and to rid the nation of the so-called " Four Olds ;" old customs, old culture, old habits, and old ideas.
Explanation: Hope this helped D:
They built universities and libraries.
Because of the good green grass that there is.