Why Is It That The Houses In The Terai Region And In Goa And Mangalore Have Sloping Roofs In Hindi?

Why Is It That The Houses In The Terai Region And In Goa And Mangalore Have Sloping Roofs In Hindi? The houses in the Tarai region and in Goa and Mangalore have sloping roofs because they get heavy rain during the monsoon season. When there are sloping roofs, the rain water can easily flow off