Holy Roman Empire
The empire was dissolved on 6 August 1806, when the last Holy Roman Emperor Francis II (from 1804, Emperor Francis I of Austria) abdicated, following a military defeat by the French under Napoleon at Austerlitz (see Treaty of Pressburg). Napoleon reorganized much of the Empire into the Confederation of the Rhine, a French satellite. Francis' House of Habsburg-Lorraine survived the demise of the empire, continuing to reign as Emperors of Austria and Kings of Hungary until the Habsburg empire's final dissolution in 1918 in the aftermath of World War I.
Role of Christianity in civilization
Theodosius reigned (albeit for a brief interim) as the last Emperor of a united Eastern and Western Roman Empire. In 391 Theodosius sought to block the restoration of the pagan Altar of Victory to the Roman Senate and then fought against Eugenius, who courted pagan support for his own bid for the imperial throne. Thus, the "Catholic Encyclopedia" lauds Theodosius as: