monks , merchants , scouts
I have researched 3 monks but can only get 2 . Merchants I can only get 9 max for two markets . Scouts have 8 researched but can only get 7 . The unit space can totally empty . Also im a second crown prince all leadership has been researched try to purchase a new village it tells me I cant due to my current rank or leadership . Last village I got I was halfway through the rank of prince .