country of south-central Asia, located on the eastern ridges of the Himalayas. Historically a remote kingdom, Bhutan became less isolated in the second half of the 20th century, and consequently the pace of change began to accelerate.

The political nucleus of Bhutan is centred in the Paro and Thimphu valleys in the Lesser Himalayan region. Its location between the Assam-Bengal Plain of India to the south and the Plateau of Tibet of southwestern China to the north gives the country considerable geopolitical significance.

Physically, Bhutan may be divided into three regions from north to south: the Great Himalayas, the Lesser Himalayas, and the Duars Plain.