If we were to get Golden Age Hammers, Piscatorium could build Rock N Roll manually within the span of 15 turns. So, while we could still plan to Chop out that Wonder, we could also just slow-build it in Piscatorium instead.
We'd build it a bit faster while in Org Rel, but I think that Research, not Hammers, is still our primary limiting factor.
But, it does bring up the point that a City such as Piscatorium should probably be connected to our Galleon chain, as it is a City that could make a Tank.
Forest Chops could theoretically be used to make an 180-Hammer Tank.
Mansa has started to tech Rifling, making for a pain in the butt.
We cannot get Corporation for Rifling.
We can sell either Radio (a poor choice) or Chemistry + Rifling to Mansa for Corporation. He will not throw in Democracy unless we also give him Radio.
Chemistry unlocks Privateers.
We basically have 2 choices here:
1. Gift Rifling to Mansa so that he picks a different tech and self-tech Steel ourselves. We will probably be disappointed, but Mansa will have the chance of picking Assembly Line
OR
2. Sell Rifling + Chemistry to Mansa for Corporation and then self-tech Assembly Line + Industrialism. We'll likely get Steel in trade from Mao, but it is hard to tell as we lost eyes on Mao's Research. Mao's Golden Age just ended, though, so it could be tight. It will probably take us about 10 turns to get Assembly Line + Industrialism, especially since we'll obsolete The Great Library as soon as we take Corporation in trade.
We won't know what Great Person we'll get from London until next turn.
What do you want to do?