Kingdom of Belgium seeks separation from the Kingdom of the Netherlands, Grand Duchy of Luxembourg and Neutral Moresnet in shock.
King William V of the Netherlands sends negotiator to Belgium.
Belgium left the Kingdom of the Netherlands in 1830/31.
Neutral Moresnet existed for a very short time and wass part of todays Belgium. The depicted flag was an actual revolutionary flag of Belgium I just made it happen a bit later. 😛