In which of the following regions, the people live in clustered villages due to security reasons?

Nagaland and Bundelkhand

The clustered rural settlement is a compact or closely built up area of houses. In this type of village, the general living area is distinct and separated from the surrounding farms, barns and pastures. The closely built-up area and its intervening streets present some recognizable pattern or geometric shape, such as rectangular, radial, linear, etc. Such settlements are generally found in fertile alluvial plains and in the north-eastern states. Sometimes, people live in compact village for security or defence reasons, such as in the Bundelkhand region of central India and in Nagaland.