Scotland was never part of England, although it was dominated by England towards the end of the 13th Century. Complete independence was achieved after the Battle of Bannockburn in 1314 under Robert The Bruce, although this was not formally acknowledged till 1328.
The English and Scottish crowns were united in 1603 under James VI (James I of England), but they remained separate kingdoms till the Act of Union in 1707.
Mexico
51%
1752
England.
England has always been an independent country.
England
Scotland never gained independence from Great Britain. Scotland is one of four provinces in Great Britain. England, Scotland, Wales, and Northern Ireland. Though Scotland is a part of Great Britain, it is still very common to say "When are you going to Scotland?", rather than saying, "When are you going to Great Britain?"
England has been independent since the Romans left.
France and England
Yes, in 1922
The British Empire is all but gone, with the last major overseas territory, Hong Kong, becoming a special administrative region of China in 1997. Scotland was an independent country until 1707, when the Union with England Act was passed. Scotland is now part of the United Kingdom, with England, Wales and Northern Ireland. However, Scotland has a devolved national Parliament and, for example, an educational system and a legal system that are separate from those of England and Wales.
Primarily, the colonists' desire to gain independence from England.