Studies of nonverbal communication across cultures reveal that A. smiles and laughter are universal signals of positive emotions. B. sour expressions convey displeasure in some cultures and pleasure in others. C. a direct gaze is considered appropriate in most cultures. D. classes usually start and end on time in most cultures.

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.

answer; during stalin"s rule, many mothers told their children that he was the greatest thing to ever happen to russia;

answer; legislature;