The article systematizes the Persian satrap's answers to the Macedonian invasion. It is sustained that social spatial dimension of the Achaemenid Empire is essential to understand the development of that State as well as Alexander's success and the satrap's actions. The imperial arena integrated different regions elites y centralized resources in the monarch's favour. But its social porosity and the repertoire of relationships between sovereign and subjects escaped from central control and could favour the replacement of the Great King though the reconfiguration of that spatiality.