Rome was a prominent city and they regarded it second to none. They needed to trade with nations that would provide them with the best products available to them. They went through the Mediterranean sea and Black Seas and other land routes via the roads built by the Romans themselves.
The primary trade was done with empires such as Spain, France, the Middle East, and North Africa. They imported a variety of products such as wine, tin, timber, spices, silver, silk, purple dye, perfumes, olive oil, marble, leather, lead, glassware, corn, beef, and a variety of other products as well. These products gave the citizens of Rome a primary advantage over others. They had access to choice products from various parts of the world.