Questions & Answers about La familia era pobre.
Both are past forms of ser, but they are used differently.
- era = imperfect
Used for background description, ongoing past situations, or repeated states - fue = preterite
Used for a completed event or something seen as finished as a whole
So La familia era pobre sounds like a description of their situation in the past.
A learner-friendly way to think about it:
- era pobre = they were poor / that was their situation
- fue pobre = much less natural here unless you are framing poverty as a completed stage or period in a very specific way
In most normal contexts, era pobre is the expected choice.