Their goal was to occupy Control the towns of Angostura and Old Guayana , which would allow Preventing_or_letting them to dominate Control traffic along the river Orinoco .

Brigadier La Torre left Departing Angostura for the missions in order to reconquer Conquering the area and its resources .

The destruction Destroying of the royalist forces Military_operation in San Felix accelerated Cause_change_of_position_on_a_scale the capitulation Surrendering of Angostura .