Did several trades like this in the round. Not much money for us but it helps Nappy which helps us...
Trigger Golden Age and switch civics
Joao is sent packing... idiot. You can see he's 2 away from Liberalism =\ He took Astronomy (bigger idiot)
After moving units in Zara's territory I find this:
After 2 turns of research Pacal trades us Nationalism (yay)
A GS is born in Carthage (I took out the specialists in favor of tiles as it really wasn't helping to get it earlier. He bulbs PP and it is finished in 2 turns.
Finally pillage the copper mine. I disconnected it first by pillaging the road to Aksum since it is not riverside.
Pacal keeps trying to win... sorry pal.
Just as I am getting ready to enter MM land, he shows up with this:
Ugh, I move the stack away and he enters our land the next turn

I lost 1 unit to an Elephant but his stack his gone.
Trade Nationalism <-> Liberalism+gold with Joao. Don't worry, Taj has 1 turn left!
So we get an extra 15 turns worth of Golden Age after my set.
The reason for getting Liberalism in a trade:
Remember the techs I gave Napoleon?
It's double-edged sadly, Zara won't break away as easily (even if it's voluntary), but Napoleon is a very competent military leader so it might be a good idea to help him capture more Zara cities with siege.
MM's stack that entered and pillaged a cottage. Wiped it off this turn in exchange for 1 Numidian.
Final turn:

Blow off beggar.
First GM born. Of all the cities I checked we can get 2250 gold and the closest is Uxmal. Second GM due in ~6 turns depending on micro.
I also sent part of the stack into MM land and they got their first pillage. Keep adding units to it since it's fairly close.
Techs:
Also noteworthy:
I settled a GG in Leptis, our military pump.
We should get 4 more universities up for Oxford.
Similarly a few more Theaters for Globe Theater.
Napoleon is 1 turn from Compass.
We're second in power, by 1000 strength only. Once Rifles are available, things will start falling in place very quickly.