z ▁ordered ▁a ▁survey ▁of ▁the ▁province ▁that ▁would ▁describe ▁all ▁the ▁est ates ▁and ▁far ms , ▁their ▁extent ▁and ▁cro ps , ▁and ▁their ▁use ▁of ▁ir rig ation . ▁▁ ▁In ▁January ▁ 1 8 4 7 ▁he ▁issued ▁a ▁dec ree ▁allowing ▁the ▁res umption ▁of ▁trade ▁with ▁Chile ▁via ▁the ▁mountain ▁route . ▁ ▁In ▁March ▁ 1 8 4 8 ▁Ben av í de z ▁deleg ated ▁the ▁government ▁to ▁his ▁minister ▁Sat urn ino ▁de ▁Las pi ur ▁while ▁he ▁was ▁in ▁M endo za ▁Province , ▁where ▁he ▁commanded ▁the ▁forces ▁of ▁that ▁province ▁in ▁a ▁short ▁campaign ▁against ▁the ▁re bel ▁commander ▁of ▁Fort ▁San ▁Rafael , ▁Juan ▁Antonio ▁Rodríguez . ▁ ▁Ben av í de z ▁soon ▁returned ▁and ▁res umed ▁the ▁government , ▁and ▁was ▁re - elect ed ▁in ▁ 1 8 4 9 . ▁When ▁General ▁Just o ▁José ▁de ▁Ur qu iza ▁declared ▁against ▁the ▁dict ator ▁Ros as ▁in ▁ 1 8 5 1 , ▁demand ing ▁implementation ▁of ▁a ▁national ▁constitution , ▁Ben av í de z ▁at ▁first ▁gave ▁his ▁support ▁to ▁Ros as ▁and ▁was ▁designated ▁military ▁commander ▁of ▁the ▁west . ▁ ▁After ▁the ▁Battle ▁of ▁Cas eros ▁( 3 ▁February ▁ 1 8 5 2 ), ▁Ben av í de z ▁ad her ed ▁to ▁Ur qu iza ' s ▁cause ▁and ▁con cur red ▁with ▁the ▁San ▁Nicol ás ▁Ag re ement ▁on ▁ 3 1 ▁May ▁ 1 8 5 2