Final answer:
The Chinese Communists were able to gain the support of the important group in China - the peasantry. Mao Zedong recognized the power of the Chinese peasants and promised them equal distribution of land and wealth.
Step-by-step explanation:
The Communists were able to gain the support of the Chinese peasants, which was an important group in China. Mao Zedong recognized the power of the Chinese peasant population and began recruiting from the local peasantry. The Communists promised equal distribution of land and wealth, appealing to the majority of landless and poor farmers who were outraged by the Nationalist failures and harsh treatment. This support from the peasantry helped the Communists to be successful in their revolution.