Who theorized that peer relations develop as peers cooperate with each other?

terms in this set (38) portuguese explorer. in 1497-1498 he led the first naval expedition from europe to sail to india, opening an important commercial sea route.(sailed around africa to india).portuguese navigator who sailed around the cape of good hope and reached the west coast of india in search of spices.

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.