Climate of Bihar in the south China sea. The maximum frequency of the tropical cyclones in Bihar is during September–November especially during the asterism called hathiya. These cyclones are essential for the maturing of paddy, and are required for the moistening of the soil for the cultivation of rabi crops. Bihar is India's most flood-prone State, with 76% of the population in the north Bihar living under the recurring threat of flood devastation. According to some historical data, 16.5% of the total flood affected area in India is located in Bihar while 22.1% of the flood affected population in India lives in Bihar.
Provinces of Portugal its beginning, a policy of regionalisation of the country, which was written into the 1933 Constitution, creating new provinces, within an executive body, the "juntas de provincia" () and a deliberative body, the "conselhos provinciais" (). Created in 1936, the new provinces did not correspond to the traditional "comarcas" or "provinícias". The new territories were based on studies made by Amorim Girão, a geographer, who divided continental Portugal into 13 ""regiões naturais"" (). The provinces were: These eleven provinces corresponded each to one of the natural regions developed by Amorim Girão, with two exceptions: the natural regions of Trás-os-Montes and