This is my pure SPECULATION. Gallia starts steamrollering both Bretonia & Kusari. They form an alliance, but still get steamrolled. Liberty & Rheinland (the ones with more technological and militaristic builds, rsepectivly) deploy a joint all-out offensive against Gallia. After a long drawn out war Gallia gets pushed back by L & R, undercutted by the Council, and crushed by the Gallic version of the Das Wilde (Because they allow importation of artifacts, they become "hypnotized" by them, and the nomads infect them)