sentences:  The date was chosen to commemorate the recorded date for the death of María Remedios del Valle, a "rabona" and guerrilla fighter, who served with the Army of the North in the Argentine War of Independence.As part of the process of conquest, the economic regimes of the European colonies in the Americas developed various forms of forced labor exploitation of the indigenous peoples.However, the relatively low population density of some of the South American territories, resistance by some aboriginal groups to acculturation, and especially the high rate of mortality caused by the diseases introduced by Europeans caused the decline of the native population.