Впредложениях есть ошибки их нужно исправить

1. The knight could move fast on horse back, and was better protected with his coat of mail.
2. When the Beaker people arrived to Britain, several stone circles had already been erected.
3. Medieval castles developed from timber towers on earth hills to massive stone fortresses surrounded by walls.
4. Giant siege machines threw stones for shattering the walls.
5. Attackers could also climb over the walls using tall ladders.
6. The Best weapon was starvation because a besieging army could stop food supplies or could poison the water supply.
7. The British Isles cover is smaller than that of most European countries.
8. For many thousands of years the islands weren't barely inhabited.
9 The most islands were covered with ice many centuries ago.
10. During thousands of years, Britain was still a weak and backward land.
11. Yet last millennium, Britain steadily grew into one of the strongest and most influential countries in the world.
12. The islands weren't never conquered again.
13. Drawing by a pair of oxen, the iron-tipped rough could till the soil more quickly.
14. Besides cattle and pigs, farmers were now raising more sheep than before.
15. The Celtic tunics, shirts and cloaks were often colourful dyed or embroidered.