In my current game things look like they are calming down enough that I might be able to make the jump from Monarchy to the Republic. I am curious if one of the bright people around here can give some rough estimates.
I am playing as England, was first to Map Making and took great advantage of the Great Lighthouse. I have explored the majority of the world and none of the major continents know of each other. I have secured my continent and in the most recent war gained about 1/5th of the largest continent .. with Rome and Carthage holding the rest.
The continent of England has been entirely built up all of its cities are at 12. There is a Forbidden Palace situated at roughly the middle of the Island. On the mainland I control the majority of the south and east coasts. ( England is off the South Coast ). Up until this point I was using Monarchy for the 4 free units per city. With 20+ English cities at Size 12 this really helped me have a large army. However now my Empire has grown to all the small islands and I see ALOT of corruption. Courthouses do not seem to help at all. I rush built my Palace on the main continent with the first Great Leader that popped out of one of the wars that has happened over the last 1000 years. Currently Rome has built a HUGE army compared to me ( I had an utter failure of a naval invasion of Japan ..

So I have to build up and build up quickly. I know that 4 Musketmen per city on the mainland will barely slow up the Roman legions. I must build more military.
I think this means that I should take the anarchy hit and go to the Republic and let the English commercial quality really shine. However I have a few questions about this.
1> What is the commerce difference between republic and monarchy? "Where does the extra money come from?"
2> Corruption, I know the republic is less corrupt, but how much, and do courthouses function better under the republic?
3> Anarchy, how long does it last? Im not looking for a specific turn number, but I am curious as if there are any "if you have more of these, or less of these anarchy is going to be longer / shorter". I always HATE switching goverments and Im even known to linger around in despotism for longer than I should cause of my fear of anarchy. What kind of unit costs am I going to see in anarchy?
4> Im 1 1/2 techs away from Cavalary ( I have modified the tech rate so that its usually 25-40 turns between discoveries ). When do I switch governments? Do I switch to the Republic just before Military Tradition? I would like to assume that I should build my army while in the Republic. This will probably 60+ turns away. Rome is probably arlready eyeing up my cities, each turn I tell myself "build like the war starts when you press space bar at the end of your turn" .. musketmen are being built at 90% of the main contient cities and pikemen who are then put on a boat and shipped to the main continent to be upgraded are being built in the core cities around the forbidden palace in England.
Cheers,