88. Oh nice!
a bit like the original Starcraft then.
89 yes, except AoE 2 takes place after the fall of rome and the conquest expansion after the discovery of america.
AoE 1 takes place before rome and the expansion name (rise of rome) should speak of itself where it is placed.
You also have AoE 3 and a fourth is coming up but that is windows store only
You also have AoM (Age of Mythology) which is basically AoE but now when you go an age up you get a god power and instead of many civilizations there are only 3 but you also pick a god to start with and each civ plays very differently instead of just giving each civ a special tech, unit, some bonuses and enabling/disabling certain things from the tech tree there is now also a difference in how to get a certain resource (faith) and some other stuff.
Also, if you don't mind windows store only AoE 1 got a "definitive" edition not so long ago.
Also, the age of Empires/Mythology series has just the best cheat codes.
I mean look at these
http://aom.heavengames.com/gameinfo/cheats or
https://www.gamesradar.com/age-of-empires-2/cheats/ and
http://artho.com/age/files/cheats.html
Yes, AoE 1 has a cheat code that turns catapult stones into cows, villagers flying like superman or doing cartwheels. Someone clearly had too much time on their hands. (remember, this was before you could load 3d models into a game and have it perform decently let alone good)