What are the main similarities and differences between the northern and southern regions of india

The clothing is different, in South India  women generally wear sari whereas in North India women generally prefer salwaar kameez or chudidar. The architecture is different as well, In north india there are a lot of islamic inspired buildings. The food is different as well, in north india they eat a lot of wheat based foods and in the south they eat a lot of rice.

F=31 because you subtract 39-8