Yeah I think researching wealth gives you a +50 resource boost across the board.
Glass seems only to be used for your research building. However, you need to upgrade this is if want to research stuff at a semi-sensible rate.
Marble is very important as pretty much every other building requires it for all upgrades past the first few. I used all I got to upgrade my trading post, which might or might not have been a great plan.
Trading post is good! Every upgrade means you can trade further and further afield for resources if you're running low![]()
Don't you need conservation before you can research wealth?
ah right maybe you do, i haven't got a clue what i'm doing....lol