Because economy within a certain region will be heavily depended on what resources that are available in that region.
Since the Arabian Pennisula do not possess a good climate to produce agricultural products, it's almost impossible for agricultural sector to flourish in this region, and therefore they focused their economy on things such as oil, silk, zaitun, etc.
Answer:
Cook Islands I think?
Explanation:
sorry if thats wrong but I'm pretty sure thats it. :)
1. They built permanent houses
2. Organized governments
3. Held religious ceremonies
4. Had time for arts and crafts
True they were but their family probably wasn’t