I know it happened after 1800, I just don't know why it's not still part of France. They all speak Dutch here, except a very very small portion near the border, and even then, it's on Google.NL's 'endangered language' list. On the other side, though, my girlfriend and I think it's nicer than Amsterdam on our little Euro-Trip here.
BTW, anyone seen that movie, Euro-Trip 2 with Simone DeVries? Good comedy!