Nutrients can be obtained from eating only one type of food

grew stronger and more determined.

chose Mao Zedong as its new leader.

Explanation:

From October 1934 to October 1935, several divisions of the Red Army retreated towards the North of China to evade the Nationalist army. The losses were terrible but allowed the Red Army to survive and endeared them to peasants everywhere in the country. The long march strengthened the communists, but more importantly, opened the door for Mao, who became the rising leader of the movement.