 Unlike previous praetors he spent time to negotiate and cultivate personal relations with tribal leaders.After the surrender of Complega, he allocated land to the poor and made carefully defined treaties with the surrounding tribes and the surrounding country, binding them to be friends of Rome.Gracchus imposed the vicensima, the requisition 5% of the grain harvest, a form of tax which was more efficient and less vulnerable to abuse than the usual Roman practice of tendering tax collection to private ‘tax farmers.’ Silva notes this is the first reference to a regulatory collection of revenue.