Hi.. i really need some

just to get straight to point, there's this huge test this month in a few days; i'm not prepared for it at all. it will be 3+ hours but anyway i been cheatin dis whole year, but now that theres a real life test i don't know how to prepare for it? how am i gonna fill my brain with school knowledge in just a few i would appreciate any

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.