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
以来 => since; henceforth ~ N2
て[以来「いらい」] => After A, B (continuous action/condition N2
Information, Report
出す => to begin to; to start to; to burst into; ... out (e.g. to jump out, to carry out)​ N4
に行く/に来る/に帰る => go/arrive/go back (to do something) N5
へ => Go to N, head to N , Often followed by verbs like 行く/いく, 来る/くる, 向かう/むかう… N5
Particles
て~て => Connect sentences N5
Line up, list
て … て => ... So very ..., extremely N3
Evaluate
ても~ても => even if ~ N4
Line up, list
て/なくて => Because/Because not N4
ては~ては => repetitive situations/actions N2