What evidence does this mosaic provide about the political relationship between zoe and her husband what does it suggest about the relationship between church and state in byzantium and about ways religion might be used to bolster political power?

For the first question, it proposes an equal relationship. Each wears a crown, the inscription above each head is identical, and each holds in their hands keys to the kingdom. She a scroll signifying knowledge, he on the other has a bag signifying wealth. 

For the second question, the church is chief to all decisions of the state. One can boost political power by saying that the choices regarding wealth and knowledge are done with the church in the lead, hence the choices of the state come with God’s blessing. 

for many centuries there were important factors which the economies of the muslim empires developed increasingly. they applied economic procedures in production, investment, finance, taxation and property. they used to tax certain goods (for example: harvest), they charged interest on money lent, they signed contracts with merchants; they relied on a common currency, and they used checks as well as promissory notes. with the money collected by means of taxation, the government provided the needy with an income. in addition, trading networks covered huge distances, so far regions started to have contact and exchange goods. this trade network covered areas of asia, africa and europe.