Помогите с предложением. Где поставить артикль the?
1. Last year we visited __ Canada.
2. __ Africa is much larger than __ Europe.
3. Do you know what __Hague is?
4. We saw __ Silicon Valley.
5. He worked in __ Middle East.
6. We will ski in __ Swiss Alps.
7. __ Malta is a republic.
8. __ Nile is a long river.
9. We study the history of __ United Kingdom
10. Have you ever been to __ Vatican?
11. We live in __ Russian Federation.
12. We swam in __ Black Sea.
13. It is in __ South of England.