If Hanover and Prussia had not intervened in the affairs of the Southern Netherlands, the Rebel Army led by Vandernoot would have been quickly extinguished by the Austrian Army.
By then, the French Army would have no reason to continue its presence in the Southern Netherlands. Unless they shamelessly chose to stay put, in which case they would immediately fall out with Austria.
Moreover, France needed the coal resources of the Walloon Region and had already invested heavily there; they could not simply walk away.
As he considered this, the carriage came to a stop, and two servants who were leading the way bowed deeply, gesturing towards a small villa nearby:
"The esteemed lord, it is right there."
Joseph, accompanied by Kesode, arrived in front of the villa and immediately saw an elderly man with a look of anxiety come out to greet him, bowing and placing his hand on his chest:
"I am delighted that Your Highness has made the journey in person, Crown Prince."