Answer:
Britain returned it to the French, angering British colonists , is the right answer.
Step-by-step explanation:
The Siege of Louisbourg was a crucial action of the French and Indian War (Seven Years' War) in the United States in the year 1758 that caused to an end to the era of French colonialism in Atlantic Canada and commenced to the following British operations to seize Quebec in 1759 and the balance of French North America the next year. Britain returned Louisbourg to the French, infuriating British colonists following the end of the war.