circumstance
Force of circumstance left me little choice but to join in.
He was a good man who was brought down by force of circumstance.
We came to this country not by our own choice, but through force of circumstance.
There was no option but to yield to force of circumstance.

SMART Vocabulary: related words and phrases

Situations and circumstances
background
busyness
circumstance
circumstances beyond someone's control
climate
comedy of errors
condition
farce
financial affairs
footing
landscape
matrix
practicality
scheme
situation
situational
the scheme of thingsidiom
under any circumstances
under no circumstances
under the circumstances