How does development of trade depend on agriculture and industry?

The relationship between agriculture,industry and trade is perplexing. Most of the raw materials are needed for industries are produced from agriculture sectors. Likewise,many goods that we export to foreign countries are produced from agricultural products. The country earns foreign currencies from these exports.

Trade is critical to the livelihood of the U.S. agricultural sector because it spurs economic growth for our farmers, ranchers and their rural communities. ... It also helps create all sorts of jobs in rural communities selling farmers products or selling things to those who sold farmers other things.

(a).national trade check first good luck

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.