Complex sentence: In the cities themselves, the families patronized youth clubs, Sufi orders, and commercial and artisan guilds, while also owning much property in the quarters, which they leased to others for residential or commercial use.
Split into simpler sentences: In the cities themselves, the families patronized youth clubs, Sufi orders, and commercial and artisan guilds. They owned much property in the quarters, which they leased to others for residential or commercial use.