 Similar to the " minor gods " system in Age of Mythology , Age of Empires III uses a " Politician System " to grant bonuses on a successful advancement to another age . When the player chooses to advance to the next age , who is given the choice of two or more " Politicians " that provide them with a different bonus on choosing them . The Politician is given a generalized title from the period that usually reflects the bonus that it gives : for example , " The Naturalist " gives the player four cows , while " The General " gives twelve musketeers and one piece of heavy artillery . As the player 's Home City increases in level , more Politicians are unlocked — at a rate of one for every ten Home City levels — up to level 60 . 
