As far as the topography of India is concerned, there can be different points. First of all, the whole territory of India is divided into three parts, namely the north, the middle and the south. From the Himalayan foothills to the Avandia Mountains, to the vast plain of NATO 16 10 km, it is traversed by the Ganges River. To the south of Nabada River, the Deccan Plateau to the north of Krishna River and Tonga badra River is the central part; South of Krishna River is the South. Second, India is divided into five parts, 1. Northern mountainous areas; 2. The northern plain; 3. Southern Plateau; 4. Rajasthan Desert; 5. Coastal plain.

In the northern mountainous areas, the Himalayas, like a high wall in northern India, protect India and basically preserve India's religious beliefs, marriage system, funeral customs, social structure and caste system since ancient times. But at the same time, it should be pointed out that there are some mountain passes in the northwest, where the forests are not dense and the mountains are not too high, so foreigners have entered India from here since ancient times. They are Aryans, Persians, Greeks, Greeks, Huns, Turks, Tatars, Mongols and so on. The entry of these ethnic groups into India not only changed the ethnic composition of India, but also brought their own cultural customs. This enriches India's national culture and complicates India's social and cultural customs. At the same time, it should not be forgotten that it is these mountain passes that have helped India establish trade ties and peaceful and friendly relations with the world. These mountain passes have played an important role in trade and friendly exchanges. Now these mountain passes are all in Pakistan. In the Himalayas, there are dense forests, which produce a lot of wood and medicinal materials. According to the historical records of China, Indian medicinal materials have been introduced to China for a long time. In addition, the Indian Ocean monsoon is blocked by the Himalayas and turned into a lot of rain, which provides favorable conditions for the growth of Indian crops. In winter, the Himalayas protect India from the cold wind from the north. Some rivers originating in the Himalayas flow through the plains, providing irrigation facilities and water resources for India. Tea is produced on the hillside with high yield. It has been exporting in large quantities, increasing foreign exchange income for India every year (about 65.438+25 billion rupees per year).

The Great Plains of North India lies between the Himalayas and the South Indian Plateau. It is famous for the plains of Satirighi River, Ganges River, Zhu Mu Na River and Brahmaputra River, covering an area of about ... 77,000 square kilometers, with a length of ... 24 14 km and a width of ... 24 1 ~ 32 1 km, making it the most densely populated place in the world. Because of its richness and wealth, there are some ancient civilized cities, commercial and trade centers and the capital of ancient emperors on this great plain. This plain was once called Aliavad, which means the place between the Himalayas and the Avandia Mountains. It is the birthplace of Indian civilization and culture and has always been the activity center of Jainism and Buddhism. Because of the fertile soil in this plain, jute, rice, tobacco, sugarcane, wheat and cotton have been abundant since ancient times. 40% of India's population is distributed here. This region plays an important role in India's economic development.

South of the North India Plain, surrounded by mountains on the east and west sides, forms the South India Triangle Plateau. Except for some peaks, the height is generally .. 458 ~1220m. This area accounts for two-fifths of all India. Structurally, it is the oldest land mass in India and probably the earliest place where Gondel people lived. In the mountainous areas of Avandia and Stebra, there are still indigenous cultures, including Pierre, Gondai, Santa and other tribes. The customs and habits of the plateau aborigines here have always been different from those of North India. South India is dominated by Dravidian language and culture, and the core elements of ancient Indian culture can be seen here.

Between the Ganges-Indus Plain and Fandiya Mountain, the southwest of India is Rajasthan Desert, the northwest desert is barren, but the southeast land is fertile. This desert protected Malva and Rajasthan, and prevented the cultural customs of Rajasthan from being interfered by foreign invaders. Society, religion, food, clothing, housing and transportation, weddings and funerals of local residents, people's personalities, hobbies, etc. Are different from other parts of India. The widow martyrdom system here is famous all over India.