▁of ▁Buenos ▁Aires , ▁he ▁tried ▁to ▁promote ▁some ▁of ▁the ▁new ▁political ▁and ▁economic ▁ide als , ▁but ▁found ▁severe ▁resistance ▁from ▁local ▁pen ins ular s . ▁This ▁re jection ▁led ▁him ▁to ▁work ▁towards ▁a ▁greater ▁aut onomy ▁for ▁his ▁country ▁from ▁the ▁Spanish ▁colonial ▁regime . ▁At ▁first , ▁he ▁un success fully ▁promoted ▁the ▁asp ir ations ▁of ▁Carl ota ▁Jo aqu ina ▁to ▁become ▁a ▁reg ent ▁r uler ▁for ▁the ▁Vic ero yal ty ▁during ▁the ▁period ▁the ▁Spanish ▁King ▁Ferdinand ▁VII ▁was ▁imprison ed ▁during ▁the ▁Pen ins ular ▁War ▁( 1 8 0 7 – 1 8 1 4 ). ▁He ▁fav oured ▁the ▁May ▁Revolution , ▁which ▁removed ▁the ▁vic ero y ▁Balt as ar ▁H idal go ▁de ▁C is ner os ▁from ▁power ▁on ▁ 2 5 ▁May ▁ 1 8 1 0 . ▁He ▁was ▁elected ▁as ▁a ▁voting ▁member ▁of ▁the ▁Primera ▁Jun ta ▁that ▁took ▁power ▁after ▁the ▁ou ster . ▁ ▁As ▁a ▁delegate ▁for ▁the ▁Jun ta , ▁he ▁led ▁the ▁ill - f ated ▁Par agu ay ▁campaign . ▁His ▁troops ▁were ▁defeated ▁by ▁Bern ardo ▁de ▁Vel as co ▁at ▁the ▁batt les ▁of ▁Camp ich uel o ▁and ▁Par agu ar í . ▁Though ▁he ▁was ▁defeated , ▁the ▁campaign ▁initi ated ▁the ▁chain ▁of ▁events ▁that ▁led ▁to ▁the ▁Independ ence ▁of ▁Par agu ay ▁in ▁May ▁ 1 8 1 1 . ▁He ▁retre ated ▁to ▁the ▁vic inity ▁of ▁Ros