Complex sentence: In the Austrian Netherlands, the Brabant Revolution, started by an "émigré" patriot army in the neighboring Dutch Republic, succeeded in pushing Austrian forces out of all of the territory except Luxembourg.
Split into simpler sentences: In the Austrian Netherlands, the Brabant Revolution, started by an "émigré" patriot army in the neighboring Dutch Republic. The émigré army succeeded in pushing Austrian forces out of all of the territory except Luxembourg.