When was the last time there were border controls, customs, or border patrols inside what is now the contiguous US?
Reading about the complexities of Europe has made me wonder about when American (internal) borders were less porous. Also, were the borders between the 13 colonies completely open? Or did they at ...
Did Romans pay customs on goods transported within the Empire? Is there any information available about the rates and the rules? For instance, what would a Roman citizen arriving in Alexandria have to ...