turning point
US /ˈtɜːrnɪŋ pɔɪnt/
UK /ˈtɜːrnɪŋ pɔɪnt/

1.
Wendepunkt, Scheideweg
a time at which a decisive change in a situation occurs, especially one with important consequences
:
•
The invention of the internet was a turning point in human history.
Die Erfindung des Internets war ein Wendepunkt in der Menschheitsgeschichte.
•
His decision to move abroad marked a significant turning point in his life.
Seine Entscheidung, ins Ausland zu ziehen, markierte einen bedeutenden Wendepunkt in seinem Leben.