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
~をたて(~を経て)      => through; after; via N1
事と次第によって => Depending on the progress of the situation N2
How to say the beginning
を通じて/を通して => through; via; throughout; by ~ N2
をもって => with... N1
Means and methods
を~として => as N2
...を...みる => judging from; seeing that ~ N4
Deduce
...を...にする => to make something ~ N4
Purpose, target
姿を見せる => figure; appearance N3
Ability
~をもって(を以って)      => by means of; with; on / at / as of (time)​ N1
[事「こと」]だ => A is necessary/good (offering advice/suggestion) N3
Needs, Requirement