Htadus said:
Why would you go for Republic gov? Wouldn't Monarchy be better?
I personally prefer Republic because (i) I don't need any military police (three of them) in each city and (ii) it produces lots of money which more than covers the maintenance costs for a large military force and allows me to ruch improvements all over the place.
Regarding MP with Persia -- what, keep Warriors unupgraded!? Are you kidding!?
War weariness can usually be kept in bounds through means such as totally destroying your enemies one by one before it sets in or provoking the enemy to declare on you.
Connecting luxuries counts directly towards more money since the entertainment slider can be pulled lower. Don't be afraid to pull it up to 30%, 40%, 50% if you have to, but get those luxuries connected. Having many cities also helps keep troop maintenance costs down.
So military conquest certainly combines just fine with Republic government.
Others might prefer Monarchy. Especially where research is limited somehow or the Golden Age must start very early, Monarchy can be researched much faster than The Republic. For example, in the latest quick game, the advantages of Monarchy were demonstrated. The Republic was out of reach, and those who stayed in Despotism lost. I suppose if you have to fight very long wars, Monarchy will also postpone war weariness somewhat compared to Republic.