By trading with them. (i think i haven’t done this in awhile)
First of all, you should know who Paul von Hindenburg was. He was a famous German officer, statesman, and politician during WWI. For his many contributions during the war, he was rewarded with Neudeck. Neudeck was an estate that once belonged to his family in the past. Now, it was found in East Prussia, but he was given it as a gift nevertheless to honor his eightieth birthday.
<span>The use of camel caravans
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I’d have to suggest Constantine the I concerting to Christianity. Being the head of the Roman Empire, he established Christianity as the official religion, thereby legalizing its practice. It no longer had to be a religion in hiding.