The scientific answer to this question is eye and music lol
A long narrow mark or band
Isn't the answer two? Seeing as the average human only has two eyes.
The architectural feature of the Islamic artists that came from the Romans was the horseshoe arch. This is what they liked best in Roman culture, so they decided to use it in their art and architecture as well. Islamic architecture is quite different from any other, although it was certainly influenced by many other world architectures.
