Explanation: India shares its international boundaries with seven countries, each with varying lengths of shared borders. Understanding the order of these countries based on the length of their borders with India is crucial for comprehending India's geopolitical landscape and its relations with neighboring countries.
The correct order of the countries in decreasing length of their shared borders with India is as follows:
1. **Bangladesh**: With a border length of approximately 4,096.7 kilometers, Bangladesh has the longest shared border with India. This extensive border is a result of the complex geography and historical ties between the two countries.
2. **China**: The border with China is the second longest, spanning about 3,380 kilometers. This border is significant due to the geopolitical tensions and strategic importance of the region.
3. **Pakistan**: The border with Pakistan is approximately 3,323 kilometers long. This border is notable for its historical and political significance, including the ongoing disputes over Kashmir.
4. **Nepal**: The border with Nepal is about 1,751 kilometers long. This border is important for trade and cultural exchanges between the two countries.
5. **Myanmar**: The border with Myanmar is approximately 1,643 kilometers long. This border is significant for economic and security reasons.
6. **Bhutan**: The border with Bhutan is about 699 kilometers long. This border is important for maintaining the strategic and diplomatic relations between the two countries.
7. **Afghanistan**: The border with Afghanistan is the shortest, spanning about 106 kilometers. This border is significant for security and regional stability.
It is important to note that the exact lengths of these borders can vary slightly depending on the source and the method of measurement. However, the order remains consistent. Understanding these borders helps in comprehending the strategic importance of each neighboring country and the challenges and opportunities they present for India.
The mnemonic "B-C-P-N-M-B-A" can be used to remember the order: Bangladesh, China, Pakistan, Nepal, Myanmar, Bhutan, and Afghanistan. This mnemonic can be a helpful tool for memorizing the correct order of the countries based on the length of their shared borders with India.