Let's see...
My Empire would be a movable caste system where each caste worked to support the other castes. Warrior - Worker - Priest/Sage
Science/Technological advances would be the main focus, and we'd quickly develop primative lightning guns and steam tanks
then I'd take over the world
Note: Ancient Egypt had knowledge of electricity and a primitive idea of how to create it/direct it... and ancient Rome had developed the steam engine.