Few days ago I had like 39 happiness, and the last few days it's gone down 1 happiness a day approximately, I am now at 35 happiness and my collection is like going down every day despite my infra increasing as I buy it. GR hasn't changed signigificantly enough to be the cause, my pop density has stayed around 55-56 in this period, I have had no events, my trade partners have not switched colors (nor have I), I have 5,000 troops for 16,000 working citizens, plus I have been buying stadiums but I can't understand why I am loosing happiness so rapidly and for no apparent reason. I discussed this on IRC with some Invicta dudes, and they also couldn't seem to find heads or tails of it.
Just wanting to know what's the deal?