The international land border of Myanmar is longest with which of the following neighbouring countries?

Introduction / Context:
This question focuses on political geography and the relative lengths of international borders between Myanmar and its neighbours. For many competitive exams, it is important to know not only which countries share borders, but also which borders are longest or most significant. Myanmar is located in South East Asia and shares land borders with several countries, but one of these borders is clearly the longest.

Given Data / Assumptions:

• Myanmar shares borders with India, Bangladesh, Laos, China and Thailand in reality, but only four of these neighbours are listed in the options.
• The options provided are India, Bangladesh, Laos and China.
• The question asks specifically for the country with which the land border of Myanmar is the longest.
• We assume the usual internationally accepted figures for border lengths are being used.

Concept / Approach:
The approach is to recall the approximate length of Myanmar’s borders with its neighbours. While Myanmar has a notable border with India and also shares borders with Bangladesh and Laos, its border with China is significantly longer in comparison to the options given. Thailand has a very long border with Myanmar too, but it is not present among the options, so we must focus only on the listed choices. Among India, Bangladesh, Laos and China, the Myanmar–China border is the longest.

Step-by-Step Solution:
Step 1: List the neighbours of Myanmar from memory: India, Bangladesh, China, Laos and Thailand.Step 2: Recall that Bangladesh shares only a short section of border with Myanmar mainly in the south east.Step 3: Recall that Laos has an even shorter border segment with Myanmar in the north east region.Step 4: Remember that India shares a substantial border with Myanmar along the north eastern states, but it is still shorter than the border with China.Step 5: Recall that China shares a long and strategically important border with Myanmar, running across several provinces in the north and north east.Step 6: Conclude that, among the given options, China is the country with the longest border with Myanmar.

Verification / Alternative check:
Another way to check is to recall figures mentioned in standard geography references. The Myanmar–China border is often stated as being more than two thousand kilometres, while the Myanmar–India border is shorter, and the borders with Bangladesh and Laos are much smaller. Since border length is the deciding factor and China clearly has a longer shared frontier with Myanmar than the other options, our selection of China is reliable.

Why Other Options Are Wrong:

• India is wrong because, although it shares a long and important border with Myanmar, this border is shorter than the Myanmar–China border.
• Bangladesh is wrong because the Myanmar–Bangladesh border is relatively short and confined to a small coastal and hill area.
• Laos is wrong because its shared border with Myanmar is very short and limited to a small stretch.

Common Pitfalls:
Many candidates misjudge this question by relying on familiarity rather than data. Since India and Myanmar are often discussed together in the context of north east India, students may instinctively choose India. Another trap is forgetting that Thailand, which actually shares one of the longest borders with Myanmar, is not in the options. To avoid such confusion, always compare only among the listed options and try to recall approximate border lengths from maps or standard geography texts.

Final Answer:
China is the country with which Myanmar has its longest international land border among the options provided.