I still have afew more doubts

1) The Whigs were in power (and not "in charge") from 1714 and 1760.
2) Avoid writing long-winded sentences linked by the conjuction "and".
3) The ministers' meetings were called Cabinet (better: they developed into the Cabinet)
4) Robert Walpole kept England out of foreign conflicts thus allowing the flourishing of trade and ?(so that the markets could flourish and taxes could be kept down).
5) His merchantilist policy brought new colonies (to the foundation/establishment of new colonies) turning England into the most powerful countries at sea (??)
(the most powerful seafaring country).
6) You mustn't write your paragraphs in capital letters. You must write in italics as all the other students, though your handwriting is unclear.

2 answers

#4. "conflicts thus allowing" = add a comma "conflicts, thus allowing"

Sra
1) The Whigs were in power from 1714 and 1760.

2) OK

3) The ministers' meetings developed into Cabinet meetings.

4) Robert Walpole kept England out of foreign conflicts, thus allowing the markets to flourish and taxes to be kept low.

5) His merchantilist policy brought about the establishment of new colonies, turning England into the most powerful seafaring country at the time.

6) You mustn't write your paragraphs in capital letters. You must write in cursive as all the other students do. You need to work on this because your handwriting is unclear.