Ah Belgium ...That's what you get when the british decide to create acountry from scratch.
Actually after Waterloo the heads of state In Europe decided a Netherlands including Belgium en Luxembourg would be a good buffer state against European conquerors like Napoleon Bonaparte. So in 1815 the "United Netherlands" ruled by William I of Orange became a fact.
Thing was, the house of Orange only cared about itself and while the wealth was pouring into the Dutch regions, the Belgian regions were exploited for taxes and resources. Then William I decided all subjects had to speak Dutch and made it law. The Belgian subjects objected, civil unrest and civil war followed and in 1830 the Belgians founded their own state.
When the Belgians founded their own state it was their "Fuck you!" to William I, current European politics and all the European heads of state who deemed them unable to have their own nation. The Belgians love their national culture and they have every right to.
The British had learnt from the Romans. The Romans had learnt from the Greeks. The Greeks had learnt from the early civilisations in the Mediterranean, Black Sea and the Levant. If you are a great ruler "divide and conquer" are your mantra.