His volunteer work in the hospital 'led' him 'to' a career in nursing. = His volunteer work in the hospital 'led' [='inspired'] him 'to become' a nurse.
We've been 'led to believe' that the labels on food items disclose all ingredients, but it's becoming clear that this is not the case.
His volunteer work in the hospital 'led to' a career in nursing. = His volunteer work in the hospital 'led to' him becoming a nurse.
(..) I was there years ago... ... when Isildur took the Ring. I was there the day the strength of Men failed. Isildur,hurry! Follow me. I led Isildur into the heart of Mount Doom... ... where the Ring was forged,the one place it could be destroyed. Cast it into the fire! -Destroy it! -No. Isildur! (..)2001 The Lord of the Rings: The Fellowship of the Ring