Long after being bitten by a stray dog, alonzo found that his fear of dogs seemed to have disappeared. to his surprise, however, when he was recently confronted by a stray dog, he experienced a sudden twinge of anxiety. this sudden anxiety best illustrates:

the answer would be in this answer. someone already asked the question.  

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.