Question

Unlike the Umayyads, who focused more on prosperity and cultural achievement than expansion?

Answer 1

I'm not exactly sure what you're asking, since this isn't a proper question. Can you rephrase this?

Answer 2

You might have better luck with this in the history section. My best guess, though, is that you might be referring the Abbasids who took control of the Muslim empire after removing the Umayyads from power. Under their rule, Islam experienced a Golden Age of learning and art drawing in scholars from all religions and many nations to share what they knew.