Maur
Banned
Not any more than HRE was united entity after great interregnum or France at its lowest during the Carolingians. The central government after An Lushan was powerless in regards to even one of the regional rulers, and the power projection you mention was basically negative.During? No. After? It was. An Lushan's Rebellion devastated the land, weakened the central government, and harmed their power projection. It took over a century for this decentralization to cripple the Tang permanently and so the seeds for the warlord system to actually begin to fragment China, and it took another smaller part of a century for this crippled state to reach the end of the line. This also excludes that the Tang pulled itself together for about half a century during this decline as well. One might say the Tang went from a cultural state to one more openly autocratic with military leaders controlling politics, but it was no where near the Late Mughals.
I do not think it is correct to call this state a united one.