に[先立「さきだ」]って/に[先立「さきだ」]ち/に[先立「さきだ」]つ => Before A occurs/takes place N2
Time, Situation
に先立って => before; prior to ~ N2
使役形 => Causative form N4
たしかに/なるほど~かもしれない => might; perhaps N3
Speculation
~V使役受身      => causative-passive form N4
Conjugate verbs
たものではない => Impossible N2
Evaluate
めったにない => Rarely N3
Degree. Level, Amount
めったに~ない => hardly; rarely; seldom N3
たりとも~ない => not even; not any ~ N1
~にもならない => ~It's not worth it N1
Evaluate
~もなにもない => nothing; (not) ~ at all; there's no need to ~ N1
Emphasize the negative meaning
[使「し」][役「えき」] => Coercive, permission, allow, make N4
Causative, Passive, Volitional