#unrefined goods

Once you reach Modern Era and beyond things change. In order to produce current goods you need to have additional, earlier era goods added. Those early era goods are called Unrefined Goods. For example in Modern Era, you need Colonial Age goods to make Modern Era goods. On top of coins and...

Hello Forums, the source of my knowledge. Can someone explain to me what Unrefined Goods actually do? How can I see how many U.G. I have? How are they consumed? Anything else I would want to know?