"This incident triggered a chain of events that escalated into something much bigger."
"This incident triggered a chain of events that escalated into something much bigger."
"this incident" 「この件」
"triggered a chain of events" 「引き金となってコト」
"that escalated into something much bigger" 「大きくなってしまいました」
[escalated](https://eikaiwa.dmm.com/uknow/questions/67895/)についてもっと詳しく知りたい方はクリックしてください。