One criticism that's often been made of the EU series is that it's mechanics are far era based than paradox's other series. That while industrialization and political parties, or vassals and dynasties, place the Victoria and Crusader Kings in specific eras a lot of the central mechanics of EU, like base tax, government types, or religion bonuses, could just as well fit in a game taking place on alpha centauri. While I think it's been getting a bit better I still think this criticism is largely correct. So, with that in mind, what are the defining characteristics of the EU era?
I'd say:
Exploration (The exploration and colonization of America, European discovery of the sea route to India and the European naval dominance (and towards the very end land dominance) in Asia.)
Ideas (The EU era saw a lot of changes in the ideas that defined how states were governed: it saw both the rise and the fall of absolutism, and between religious wars and early secularization and the scientific revolution)
The reformation
I'd say:
Exploration (The exploration and colonization of America, European discovery of the sea route to India and the European naval dominance (and towards the very end land dominance) in Asia.)
Ideas (The EU era saw a lot of changes in the ideas that defined how states were governed: it saw both the rise and the fall of absolutism, and between religious wars and early secularization and the scientific revolution)
The reformation