Why was India always divided into north and south?

India's division into north and south has historical, cultural, and linguistic roots. Geographically, the Himalayas separate the north from the south, leading to distinct climatic zones and lifestyles. Culturally, different regions developed unique traditions, languages, and religions, influenced by various historical invasions and migrations. Additionally, the diverse socio-economic conditions have further reinforced this division, creating a rich tapestry of regional identities within the country.