The treaty was ratified 'through the agency of' a neutral country.
He found work as a mechanic through an 'employment agency'.
an athlete who has become eligible for 'free agency'
(..) Your brother's out there to pull a job. We're running out of time. Those truckers aren't laying down anymore. Maybe they'll make it through tonight, but every law enforcement agency... ...is coming down on them. If you don't want anything to happen to them... ...you have to get in that car (..)2001 The Fast and the Furious