Three of the following methods are used by the Romans republic to ensure the loyality of conquered people's in Italy which was NOT

the correct answer to this question is; Mass evacuations of non-latens were carried out by the roman army.

Romans often used techniques such as citizenship, drafting into the roman military, and assimilation to ensure their subjects remained loyal to the imperial course. The assimilation of subjects however never came peacefully especially in Rome and it led to series of internal war.