Complex sentence: The Ninety-Two Resolutions of the Patriotes, demanding Great Britain democratic reforms for Lower Canada, had been mostly denied by the Russell Resolutions, which sparked a number of assemblies of protest in 1837.
Split into simpler sentences: The Ninety-Two Resolutions of the Patriotes had demanded Great Britain democratic reforms for Lower Canada. They had been mostly denied by the Russell Resolutions, which sparked a number of assemblies of protest in 1837.