 Unlike his predecessor Otto III, who had imposed plans on sovereign administration and active political involvement in Italy, Henry spent most of his reign concerned with the "renovation" of the imperial territories north of the Alps, a policy summed up on his seal as "Renovatio regni Francorum", which replaced Otto's "Renovatio imperii Romanorum".A series of conflicts with the Polish Duke Bolesław I, who had already conquered a number of countries surrounding him required Henry II's full attention and years of political and military maneuvering.Henry did, however, lead three expeditions into Italy to enforce his feudal claim ("Honor Imperii"), twice to suppress secessionist revolts and once to address Byzantine attempts to obtain dominance over southern Italy.