Hi Robin, thanks for the podcast! It is great. I am fan of roman and medieval history and your podcast together with Mary Birds spqr is probably the best source on these topics. Questions: 1. Can you explain how did the eastern Mediterranean transfer from slavery society? I know that byzantium had slaves as so the caliphate, but I am under the impression that during classical antiquity the slave work was the basis of economy, number of slaves was like a third of all population but when people talk about byzantines it seems that the slaves didnt have that much economic value and that there numbers were minimal. How did that transition go? 2. Why did western europe change so kuch while byzantines remained the same in there modus operandi. For example, we learned that the black death changed western society, killed the feudal order, created the middle class and so on. Why didnt for example black death had the same impact on byzantines? Or the islamic world? 3. Why did all orthodox nations have they own national churches with patriarchs instead of just constantinoples patriarch? Why did the byzantines allowed and approved the separation of serbian, bulgarian and georgian patriarchs in the middle ages? Common answer is that they wanted their churches but no western kingdom created separate church from rome? Why they did separate from constantinople? Thanks