This document was not written as a tutorial, but as an overview of AI weaknesses. It describes a strategy that is sufficient to beat the AI, especially in games with high landmass. It can partly be used against human players. The plan is practically failsafe, once you survive the initial stage. After that, the Mongols have plenty of room to expand, and any human who knows the basics would find it hard to lose.
Engineers are busy connecting the empire with railroads.
As soon as Armor is developed, create a direct, railroaded route to the Pyramids and conquer them. Develop Robotics to allow Howitzers, because AI cities all have city walls. Instead, I turned the Mongols to AI immediately after building Michelangelo's and observed what happened. How the AI screws up my plan. The AI immediately aborts tech development and builds city walls, barracks, and two military units in every city.