Christophe committed suicide, Jean-Pierre Boyer reunited Haiti without a single battle.
Jean-Pierre Boyer became President of the Haitian Republic in 1818, following a succession arrangement for the transition with former, then dead President Petion. A revision of the constitution, done two years before, had allowed the president to name his replacement to protect Haiti from outside intrusion. But Boyer also had to contend with inside intrusion in the form of Henri Christophe and the northern Kingdom of Haiti. This opposition would take care of itself as Christophe would commit suicide after a rebellion by his soldiers, leaving Boyer free to peacefully reunite the country.