Why do only two rivers fall into the Arabian sea?

Only two major rivers, the Indus and the Narmada, flow into the Arabian Sea due to the region's topography and climatic conditions. The surrounding land is primarily arid and semi-arid, limiting the development of significant river systems. Additionally, the Western Ghats and other mountain ranges create barriers that influence the flow of rivers towards the Arabian Sea. Most rivers in the Indian subcontinent tend to flow towards the Ganges and Brahmaputra basins, which drain into the Bay of Bengal instead.