expression
because of this; for this reason; as a result
Used to introduce a consequence or reason directly linked to the preceding context. Common in both spoken and written Japanese.
大雨が降った。このため、試合は中止になった。
It rained heavily. Because of this, the match was canceled.
彼は遅刻した。このため、会議に間に合わなかった。
He was late. For this reason, he didn't make it to the meeting.