Czechoslovakia.
Which one? Without knowing which one and the condition, it really isn't possible to give you a decent answer. Most aren't worth much - about .20
France or one of its territories. Republic of France is what the RF stands for.
Česka Republicka is how you say it. The previous answer, "ceskoslovensko", actually means "czechoslovakian".
For which country?
Spains
There isn't any stamp that is called a penny purple. You need to describe the stamp - include country and if you can date and what is on the stamp.
Yes, it is a postage stamp country. It does not refer to the small size of the country. It references the fact that they make a good revenue from the production and sale of postage stamps to collectors.
United Kingdom.
No, you must buy the stamp in the Country you are sending from.
Austria is not a "postage stamp country". See Related Question, below.
The country was Russia
Great Britain issued the first postage stamp in 1840.