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Which regions and countries border Arunachal Pradesh?

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Arunachal Pradesh is a mountainous state located in the extreme northeastern part of India. Its borders are defined as follows:

North: The Tibet Autonomous Region of China. This border is marked by the McMahon Line, which has been a subject of a long-standing sovereignty dispute between India and China.12
West: The kingdom of Bhutan.13
South and Southeast: The country of Myanmar and the Indian state of Nagaland.1
South and Southwest: The Indian state of Assam.1