After the Bronze age collapse, the Roman Empire rose. Once that collapsed it also took a very long time before another big empire arose (with perhaps a brief exception under Charlemagne).
It seems instead that the process of building a bureaucracy that can support an empire is tough. And that the conditions left behind after an empire collapses are particularly tough to re-consolidate under another empire.
It seems instead that the process of building a bureaucracy that can support an empire is tough. And that the conditions left behind after an empire collapses are particularly tough to re-consolidate under another empire.