Noun
factionalization (countable and uncountable, plural factionalizations)
The formation of factions, often through conflict.
After his death, factionalization and rivalries within the military and political élites has been a major factor in Algerian politics. Source: Internet
He assumed power in 1748 after the deaths of the leaders of both factions in battle, but the rivalry continued, with the factionalization working in favor of the Iranians, who occupied Muscat and Sohar in 1743. Source: Internet