expression, suru verb (special)
originate from; stem from; start with
Often used in the pattern 〜に端を発する to indicate that something has its origin or beginning in a particular event, person, or thing. Slightly formal.
この問題は小さな誤解に端を発する。
This problem originates from a small misunderstanding.
彼の成功は地
His success stems from steady effort.