You now that back in 1300BC tin to make bronze in Egypt or Greece was imported from far away Afghanistan? Do you know that in 10000BC people traded seashells in

You now that back in 1300BC tin to make bronze in Egypt or Greece was imported from far away Afghanistan? Do you know that in 10000BC people traded seashells in Siberia, thousands of km away from the ocean? It's a good idea to be as independent as possible, but no country was ever entirely self-sufficient. Not even North Korea.