watershed:

an event or area marking a turning point in a situation

watershed:

an event or area marking a turning point in a situation

(Noun)

Example Sentences:

Ramayana:  Hanuman’s mission to Lanka was a watershed in his life; it demonstrated that he was not just one amongst several powerful monkeys but was the most powerful monkey.

Mahabharata:  The martial exhibition was a watershed for Karna, for it elevated him from obscurity to royalty and even celebrity.

Bhagavad-gita:  The Gita is a watershed in the history of Indian philosophy: it integrated the two diverse paths of action and renunciation into a path of action in a mood of renunciation.