Redux: Special buildings...

[daigaku]

Topic:

I would like to open this new thread for [general discussion and info on] some not-too-obvious buildings and their prerequisites [in Redux].

Context:

I stumbled over this "treaty of Trade" in my English campaign (and did build it), had a look at the "BUILD_PROD13" and saw quie a few more, but I seem unable to build them. What must be done/built before? Are they available to the English? Could you give me some suggestions please?


greetings daigaku