Religion is classified as follows
(i) Universalizing Religions
(ii) Ethnic Religions
(iii) Tribal or Traditional Religions

Language is a great force of socialization. Language, either in the written or oral form, is the most common type of communication.

The major world Human races are
(i) Caucasoid (European)
(ii) Negroid (African)
(iii) Mongoloid (Asiatic)
(iv) Australoid (Australian)

Old House Types
(i) In the early periods of human settlement, houses were built using local materials.
(ii) In the agricultural regions, houses were built with mud walls and the roofwas made of stalks of paddy (or) other crops of grass (or) thatch.
(iii) Local wood was used to provide frame for the roof.
(iv) Such old houses had wide verandahs and an open air circulation.
(v) The size of the house depended on the economic status of its inhabitants.

A rural settlement pattern is a function of relief, climate, water supply and socioeconomic factor. It is broadly classified under the following patterns, such as Linear, Rectangular, Circular, Star like pattern etc.,
(i) In a Linear settlement, houses are arranged along the either side of a road, railway line, river (or) canal, the edge of a valley, etc., E.g., the Himalayas the Alps, the Rockies.
(ii) The rectangular settlements are almost straight, meeting each other at right angles. Such a settlement is found in plain areas (or) inter montane plain. E.g: Sutlej.
(iii) Houses built around a central area are known as Circular pattern of settlements such settlement develop around lakes and tanks.

The word megalopolis is given for a large conurbation, when two or more large cities whose total population exceeds ten million E.g, Washington D.C, Kolkata

The different means of communication and fast moving world advancement in technology understanding of different languages has became very easy.

The Dravidian languages are Tamil, Telugu, Kannada, Malayalam and Tulu