What was the purpose of the alliance between the nationalistsand the communists?

In October 1911, a revolt ended the Qing Dynasty and the Republic of China was founded. The leader of the revolution was Dr. Sun Yat-sen who lived from 1866 to 1925. He was the first president of the Republic of China. In order to gain support from China's workers and serfs, he formed an alliance with the Communists to end the anarchy. 

Thank you!

pepin the short[a] (german: pippin der kurze, french: pépin le bref, c. 714 – 24 september 768) was the king of the franks from 751 until his death. he was the first of the carolingians to become king.[b][2]

the younger son of the frankish prince charles martel and his wife rotrude, pepin's upbringing was distinguished by the ecclesiastical education he had received from the monks of st. denis. succeeding his father as the mayor of the palace in 741, pepin reigned over francia jointly with his elder brother carloman. pepin ruled in neustria, burgundy, and provence, while his brother carloman established himself in austrasia, alemannia and thuringia. the brothers were active in suppressing revolts led by the bavarians, aquitanians, saxons, and the alemanni in the early years of their reign. in 743, they ended the frankish interregnum by choosing childeric iii, who was to be the last merovingian monarch, as figurehead king of the franks.

letter a is the answer