Want this question answered?
no
No
borna
cheat codes.
No, as this is a web application
yes
social emperes
no
Maybe
Sadly there is no cheat so you cannot run out of population.
Assuming that age of empires 2 trail is the same as age of empires 2, for most cheats, like aegis, you can undo it by typing it into the cheat box. However, for ones that give you +1000 in resources, you can't undo those. If you use a cheat that gives you a unit, just select the unit(s) and hold "delete".
Just press enter....