Ye are the light of the world. A city that is set on a hill cannot be hid. - Matthew 5:14
The Enlightenment Age is the fifth age a player can reach in Rise of Nations, and the fourth age available to research.
After advancing to the Enlightenment Age, players are given a new palette of buildings to build, technologies to research, and units to create. This age marks an increase in technology and research, and thus allows players to create more advanced units and economic upgrades. Nation powers and abilities begin to form in this age, and play an important role in expansion. This age also sees the disappearance of Foot Archers as they merge together with Gunpowder Infantry.