Describe the social & ethnic composition of –

a) Belgium

b) Sri Lanka

The social & ethnic composition of Belgium:

Belgium, a small European country, has Dutch-, French- and German-speaking populations. While 59% of the total population of the country live in the Flemish region and speak Dutch, the other 40% of the people live in the Wallonia region and speak French. In Brussels, the capital of Belgium, about 80% of the people speak French, while the remaining 20% speak Dutch.

Please ask the other part of the question as a separate query.