Part C In the space provided, justify your ranking from part B of this task. Briefly make an argument for why you think one cause had a bigger impact than the other causes. You answer should be about 100 to 150 words long and include evidence to support your argument. The evidence can come from the lessons in this unit or from outside sources. Be sure to list the sources that you used to support your answer.

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.