Meanings of few background in английском

Morrison, I have a few background questions for you.

Those few background details prompted one British paper to discuss why she may not be loved by the home crowd.

Once Alena was sworn in on the witness stand, Duncan led her through just a few background questions before getting to the point.

Despite having swallowed an entire world, the perpetrator was visible only to those astronomical instruments capable of recording its occultation of a few background stars.