This is a question easily answered if you look at the right resources. In this case the technology-tree of Civilization Revolution: it clearly shows that "invention" is a pre-requisite to "electricity".
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Re^5: Before electricity was invented, what was the Electric Eel called?
by ambrus (Abbot) on Feb 24, 2017 at 19:13 UTC
by Anonymous Monk on Feb 26, 2017 at 05:56 UTC