I had a little fun playing with Elizabeth on the earth map with 18 civs, trying to get liberalism as fast as possible. I usually play this map a lot in multiplayer, and I sometimes - as many of us do, probably - try different strategies in singleplayer just to get a clue if it will work or not. So my game was on noble level, quick speed and no tech trading, as is the usual multiplayer settings. I ended up having liberalism 350 AD, my new record (previous was 400 and something AD in a 1 cont each game). What's really funny though is to have cavalry 700 AD, while France still defend it's cities with archers (yeah, Louis didn't even have longbows, but that's just noob AI, though). We all know the clues here, Elizabeth being philosophical means a lot of lightbulbing. I also used stone and built pyramids in London, and used the great engineer I later got from it to build Great Library (I might could have done it faster if I didnt get alphabet and literature on the way). Running representation (if you have pyramids), bureacracy, caste system and pacifism is a great combination with a leader such as Elizabeth.