The central location of India helped in establishing close contacts with West Asia, Africa, Europe, Southeast Asia, and East Asia. Let's discuss how:

Peninsular situation:
India's peninsular situation did help in establishing contact with West Asia, Africa, and Europe from the west coast. However, it did not aid in establishing contacts with Southeast and East Asia from the east coast.

Indian landmass:
The Indian landmass did provide a platform for establishing contacts with Southeast Asia and East Asia from the east coast. However, it did not aid in establishing contacts with West Asia, Africa, and Europe from the west coast.

The central location:
India's central location was the most important factor that helped in establishing close contacts with different parts of the world. It is located between the East and the West, and it served as a land bridge between the two regions. The central location of India helped in the following ways:

1. Trade routes:
India's central location made it an ideal hub for trade. Merchants from different parts of the world came to India to trade in spices, textiles, and precious stones. The trade routes connected India to West Asia, Africa, Europe, Southeast Asia, and East Asia.

2. Cultural exchange:
India's central location also helped in the exchange of culture between different regions. The traders who came to India brought with them their culture, language, and religion. This led to the exchange of ideas, beliefs, and practices.

3. Diplomatic relations:
India's central location also aided in establishing diplomatic relations with different regions. India had friendly relations with many countries, and this helped in maintaining peace and stability in the region.

In conclusion, India's central location was the most important factor that helped in establishing close contacts with different parts of the world. It served as a hub for trade, cultural exchange, and diplomatic relations.

India's landmass shape is in v , it is also southeast extension of Asia by having this benefits it connects west Asia, Africa, and europe from the west coast with southeast asia and east Asia from east coast