The feeling of oneness and unity among the people of various religions, castes of a country is called unity in diversity

(i) Pongal
(ii) Deepavali
(iii) Holi

(i) A continent is a very large area of land with various physical features such as mountains, plateaus, plains, rivers and seas and various types of weather patterns
(ii) India has all of them.
(iii) So, India is known as a sub-continent.

People speak different languages, eat different kinds of food, celebrate their own festivals and different cultures, worship in different ways, yet we live together. This is known as diversity.

(i) Diversities are seen in landscapes, climate, natural vegetation and soil.
(ii) Diversities are seen in languages, races, religion, customs and caste. 
(iii) And also diversities are seen in habits and heritage, food and dress, art and architecture.
(iv) Irrespective of differences in all the above, we all take pride in calling ourselves as Indians.
(v) The feeling of oneness and unity among the people of various religious, castes of a country is called unity in diversity.

(i) According to census of India 2001, India has 122 major languages and 1599 other languages.
(ii) Four major Indian language families are Indo-Aryan, Dravidian, Austroasiatic, and Sino Tibetian. Tamil is the oldest Dravidian language.
(iii) Historically, the Portuguese, the Dutch, the British, the Danish and the French came to India for trade and their occupation of India or some parts of it has left behind a certain impact upon the culture and language of the people.
(iv) Because the British ruled over the entire country for over three hundred years before independence in 1947, the English language gained prominence in India. In due course, English has emerged as an important language and a medium of instruction in schools and colleges.
(v) It is widely used in official communication and daily life.
Cultural Diversity :
(i) The term 'culture' refers to customs and practices of people, their language, their dress code, cuisine, religion, social habits, music, art, and architecture.
(ii) The culture of a group of people is reflected in their social behavior and interactions.
(iii) The group identity fostered by social patterns is unique to a group.
(iv) Art and architecture are an integral part of every community.
(v) It develops as a part of culture and tradition of a community.
(vi) Each of the 29 states and 7 Union territories of India has rich traditions and unique ways of artistic expression.