European History

I am taking AP World History next year and was wondering how similar it was to AP European History? If I do well in the world history class should I take both AP tests?

I’ve not taken EHistory, but I’ve taken World. World is EXTREMELY easy to pass. I got a 3 and I literally can tell you nothing about the history of the world, except for something about a triangular slave trade. My teacher was incompetent and despite the fact that I learned nothing I managed to pass AP World, so chances are… you’ll be fine!

My question is similar: if I take European History, will I have to study a lot for SAT World?