This document shows the neglection of foreign trade and shipping for the colonists. Certain goods and crops are entitled souly to Great Britain: mast trees, ship timber, iron, copper, tobacoo, etc. American Trade with the Spanish is prohibbited because the trade is for controband purposes. The foreign trade, however produceds a money in the form of coins. (Document D). Great Britain also prohibited the development of iron and steel in the American Colonies. There was no reasoning to the doing of the prohibition. John Dickinson the author of Letters from an American Farmer, wants all of the farmers to make a change and to not be discourage over the taxes upon them (Document