In addition, there were Military Bases established by Australasia in El Salvador and so forth. Of course, unlike the American army's military bases, Australasia's bases were nominally there to help train El Salvador's own Military, not to station troops to control the local situation.
The people of El Salvador were also well aware of just how dire their living conditions were, especially under the influence of gangs. Frequent brawls and shootings were common in El Salvador, which made the arrival of the Australasia Army to help maintain Order welcomed by the Salvadorans.
To gain further support from the people of El Salvador, the arrival of the Australasia Army brought with it abundant supplies and aid, effectively improving the quality of life for Salvadorans.
This tangible benefit was what the Salvadorans welcomed the most, and it was the real reason why they did not resist the presence of the Australasia Army.