German Conqueror

So rebels spawned into the world with no civilization and it now counts as a wasteland province or as it says in the menu, a sea province. Is there any way to fix this? I have a screenshot here for proof. And yes, the version I am running is modified.

I have made a union with Turkey and made Syria-Turkey from it. I now have 100+ relations with Russia and I also have an alliance with Russia. I keep sending "Form Union" and Russia always denies the option. How can I get Russia to accept the Union? And to note that I am number 1 on the global ranks. Please and thank you.

I would like to know how many numbers of an army is required to vassal and annex countries, like small, midsized, and large countries. That would be great if you could give me advice 🙂

When do you think this project will be done?

I am playing as Byzantium in the 1440 start date. So some things are restricted because it isn't the certian age yet?

For example, I would want to change the Byzantine Empire to Communism but it won't allow me, how do I make it so I can do that?

I would like to boost a province economy of 99 as it wasn't 99 before, how do I restore the economy of that province?