<em>you will how to go back to the passage in support your answers to the question</em>
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The Mediterranean Sea is a sea connected to the Atlantic Ocean, surrounded by the Mediterranean Basin and almost completely enclosed by land: on the north by Southern Europe and Anatolia, on the south by North Africa and on the east by the Levant.
WW1 was the first war that was truly global, for the war that started in Europe also affected nation's in the Asias as well as the Americas. With the subcontinent and a whole different continent combined, and with most of the world's country in the war, it can be described as the world's first world war.
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Bartering would be correct.. all the others involve money
I would say federalism or nationalism
