The two largest battles led by British regulars in North America were near catastrophic losses. They marched straight into an ambush in one and attacked a fort without adequate men in another. The colonists had pretty much won Canada with no help from Britain by capturing, at great cost in fortune and life, the fortress at Louisport during King George`s War, only to watch the British negotiate it away for some piece of land in the Netherlands.
By the time the Declaration was written Royal forces had shelled and burnt down Charlestown During the battle of Bunker Hill, raided farms near water to support their army in Boston, and was in fact planning to subjugate the colonists especially in New England.
Canada`s public screwls must be as poor as ours.
Not to mention the blockade of Boston, which, had it happened today, would be considered one of the greatest human rights abuses in Western history.