Military action
A military disaster for the Iron Empire which would ultimately ends its dreams for a true Empire once and for all, the forces of the Iron Empire which had long been stretched to the breaking point with its expansion across the seas and beyond experience a crippling defeat by the forces of the Suzerainty of Ruatiwanga. Their forces encircled, outmaneuvered, and destroyed, the Iron Empire's defeat in the fields and seas surrounding Saganaoa put the final nail in the Empire's dreams of a globe-spanning empire, forcing all to realize what a fool's errand it truly was and forcing the Iron Empire to recognize the might of the Suzerain and his armies for the first time in history.