... 前に => Before ... N4
Relationship before and after
受身形 => Passive voice N4
... 前に => ... in front of, before N4
Relationship before and after
前に => before; in front of ~ N5
~V使役受身      => causative-passive form N4
Conjugate verbs
を前提に => On the premise of N1
Premise
[受「う」]け[身「み」] => Passive, be V-ed. N4
Causative, Passive, Volitional
手前 => considering; before; in front of; one’s standpoint N1
[使「し」][役「えき」][受「う」]け[身「み」] => Imperative N4
Causative, Passive, Volitional
~[前「まえ」]に => Before N/Vる(occurs/happens) N5
Time
当然だ/当たり前だ => natural; as a matter of course N2