The Battle of the Trebia took place south of the Trebbia's confluence with the Po river.
is a district located in Aichi Prefecture , Japan .. district. Districts of Japan. Aichi Prefecture. Aichi Prefecture. Japan. Japan. As of September 1 , 2011 , the district has an estimated population of 71,240 and a density of 1,770 persons per km ² .. district. Districts of Japan. population. population. density. population density. The total area is 40.22 km ² .