Engineering, the fourth Construction <l:6,66>Advance<e>, introduces the arch and cement to building, resulting in such splendors as the <l:2,9>Aqueduct<e>, and the <l:2,10>Coliseum<e>. In addition, it allows for the knowledge necessary to construct the <l:3,6>Forbidden City<e>, Engineering allows a city to construct <l:6,117>Infrastructure<e> by devoting its resources to creating public works. Finally, it allows the construction of mighty <l:1,74>Siege Engines<e>.
