に先立って => before; prior to ~ N2
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
…どうりがない => No reason... N2
Emphasize negative meaning
などする => such as; things like ~ N3
Demonstrate by example
どおり => in that way N3
Base, base
なんか/なんて/など => give examples N3
なるほど => I see; that's right; indeed N3
Accept, agree
てもどうなるものでもない => It's no use; can't do anything N3
Invariant
~きわまる/きわまりない(~極まる/極まりない)      => extremely; very ~ N1
どうりで => indeed,it's no wonder N2
Base, base
どうにかなる => somehow manage do something about N2
Evaluate
V‐る+なり => as soon as; right after ~ N1
Happens next