These special resources are tin—available until epoch 6, iron—first available in epoch 4 and is no longer used after epoch 9, saltpeter—first available in epoch 7 and is used until epoch 12, oil—first available in epoch 10, and uranium—first available epoch 13.
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The final scenario is about the war with Denmark, Austria and France and the unification of Germany under Otto von Bismarck.
Ottoman Empire | Order of the British Empire | Russian Empire | Earth | Roman Empire | British Empire | Holy Roman Empire | German Empire | Byzantine Empire | Mughal Empire | Austrian Empire | Earth-616 | Google Earth | First French Empire | Empire of Japan | Empire State Building | Earth Day | Vijayanagara Empire | Spanish Empire | Boardwalk Empire | Empire | Friends of the Earth | From the Earth to the Moon | Cursed Earth | Earth, Wind & Fire | Mongol Empire | Middle-earth | Second French Empire | Order of the Indian Empire | Portuguese Empire |