<P> The headquarters of the organization in Canton directed the underground revolutionary movement in Vietnam, making all important decisions . </P> <P> Thanh Nien was designed to prepare for an armed struggle against the French colonial occupation . Ho Chi Minh and his associates envisioned three phases . In the first phase, an external center was to be established as a training center, source of unified political propaganda and headquarters for strategic decision - making and the maintenance of organizational and ideological discipline . Secret revolutionary groups called "cells" were to be trained in Canton and returned to Vietnam to operate . </P> <P> In the second phase, activity would become "semi-secret", in which Thanh Niên cadres would initiate political and economic activities, including strike action, boycotts and protests, which might include political violence as a means of mobilizing the masses . A third, insurrection phase, would rise up and overthrow the established political regime by force of arms, establishing a new revolutionary government . </P> <P> Thanh Niên was conceived of as a relatively open mass organization, with the most trusted members part of a directing center called the Communist Youth Corps (CYC). At the time of Thanh Nien's dissolution in 1929, the CYC is believed to have consisted of 24 members . In addition to Thanh Nien, this small inner circle directed two other mass organizations, Nong Hoi ("Peasants' Association") and Cong Hoi ("Workers' Association"). </P>

Who led a revolt in vietnam changing it to a communist country