Region: West Bengal
Geographical Factors: It Lies in the regions of Ganges-Brahmaputra Delta. It stretches from the Himalayas in the north to the Bay of Bengal in the south. A small coastal region is on the extreme south, while the Sundarbans forests is a remarkable landmark at the ganges delta.
Historical factors: It has close relations with geographical factors. The major population depends on agriculture or mainly the cultivation of rice due to fertile lands of Delta. The people of Bengal supported Bangladesh Liberation war. Durga puja of Hindu and Eid of Muslims are two main festival celebrated in Bengal.
Region: Kerala
Geographical Features: Situated between the Lakshadweep Sea and the Western Ghats. It has a wet and maritime tropical climate influenced by the seasonal heavy rains. The westen coastal belt is relatively flat compared to the eastern region and have many lakes and canals.
Historical factors: Due to coastal areas, export and import were prevalent and thus there are people from many religions. the state has nearly equal population from Hinduism, Muslim and Christian regions. festivals like Onam, Eid, Christmas etc. are celebrated. The geographical features helped in the cultivation of spices.