In 1827, Ioannis Kapodistrias, from Corfu, was chosen by the Third National Assembly at Troezen as the first governor of the First Hellenic Republic. Kapodistrias established a series of state, economic and military institutions. Soon tensions appeared between him and local interests. Following his assassination in 1831 and the subsequent London conference a year later, the Great Powers of Britain, France and Russia installed Bavarian Prince Otto von Wittelsbach as monarch. Otto's reign was despotic, and in its first 11 years of independence Greece was ruled by a Bavarian oligarchy led by Joseph Ludwig von Armansperg as Prime Minister and, later, by Otto himself, who held the title of both King and Premier. Throughout this period Greece remained under the influence of its three protecting Great Powers, France, Russia, and the United Kingdom, as well as Bavaria. In 1843 an uprising forced Otto to grant a constitution and a representative assembly.