expression
from the fact that ...; because ...
A formal, written-style conjunction used to state a reason or cause based on a preceding fact. Often appears in explanatory or argumentative contexts.
彼は経験が豊富なことので、この仕事に適任だ。
Since he has a wealth of experience, he is well-suited for this job.
この書類は重要であることので、厳重に保管してください。
Because this document is important, please keep it in a secure place.