Defeat shifts Britain from conquest toward independence movements

The victory initially strengthened Spanish confidence in South America, but Britain began supporting independence movements whose capture of Spanish fortifications could secure separation from Madrid. Those defenses could therefore change from barriers against British attack into assets protecting newly independent governments. In this interpretation, Britain's main interest was access to trade rather than possession of a vast South American hinterland. Cuba and other islands better matched a maritime empire because naval control could secure bounded bases and trade routes with fewer people than an extensive continental territory required.