Question

i need to know which country these words came from caravan,yoghurt,sofa,dessert and shampoo

Answer 1

Your second word is from the Turk:
http://www.etymonline.com/index.php?search=yogurt&searchmode=none

Keep searching your words on that site, and you'll find out about each.

Answer 2

I would look them up here.
http://education.yahoo.com/reference/dictionary/entry/yogurt

Now yogurt is a curious dish. Have you ever had Turkish (or Greek) yogurt? It is like a custard, very much unlike that soft stuff we get in the stores in the US (unless you go to a import store). It is almost (not quite) like a soft cheese, very little moisture.
A very nice ice-cream is made in Central Turkey, and a variation of it is made with Goat yougart, sugar and sahlep powder (dried powdered roots of a mountain orchid - Orchis Latifolia or Orchis Anatolica in Latin). This is a dessert one will never forget. The orchid is becoming rare.

Try the dictionary