The question who should invest -LRB- or more to the point , appoint -RRB- whom was the subject of an epic conflict between the MISC@1 church -LRB- mainly papacy -RRB- and state -LRB- mainly the Holy Roman Empire -RRB- in the Middle Ages during the so-called Investiture Controversy .

Investiture Controversy The question who should invest -LRB- appoint -RRB- whom was the subject of a conflict between the MISC@1 church -LRB- mainly the papacy -RRB- and state -LRB- mainly the Holy Roman Empire -RRB- in the Middle Ages during the so-called lay investiture controversy .
