In most empires, trade is important as it is a vital interaction for every country in the world. Without trade, countries would have to provide their own resources for every aspect in their daily life. Take for instance items such as food, clothing and technology.
Official record of the proceedings and debates of the united states congress published by the united states government printing office
I am pretty sure the answer that oyu are looking for is D. I hope I am right and that this helps. Good Luck
