Land masses formed barriers and only 1 path allowed trade
Christianity, decadence, the metal lead in the water supply, monetary trouble, and military problems caused the fall of rome.
It seems that you have missed the important options for us to answer this question, but anyway, here is the answer. The one that is perceived as being equivalent to declaring economic war against the axis powers is the<span> Lend-Lease Act. Hope this answers your question. Have a great day!</span>
Many ways but idk a specific one