<P> Louisbourg itself was one of the most important commercial and military centres in New France . Louisbourg was captured by New Englanders with British naval assistance in 1745 and by British forces in 1758 . The French population of Île Royale was deported to France after each siege . While French settlers returned to their homes in Île Royale after the Treaty of Aix - la - Chapelle was signed in 1748 , the fortress was demolished after the second siege . Île Royale remained formally part of New France until it was ceded to Great Britain by the Treaty of Paris in 1763 . It was then merged with the adjacent , British colony of Nova Scotia ( present day peninsular Nova Scotia and New Brunswick ) . Acadians who had been expelled from Nova Scotia and Île Royale were permitted to settle in Cape Breton beginning in 1764 , and established communities in north - western Cape Breton , near Cheticamp , and southern Cape Breton , on and near Isle Madame . </P>
<P> Louisbourg itself was one of the most important commercial and military centres in New France . Louisbourg was captured by New Englanders with British naval assistance in 1745 and by British forces in 1758 . The French population of Île Royale was deported to France after each siege . While French settlers returned to their homes in Île Royale after the Treaty of Aix - la - Chapelle was signed in 1748 , the fortress was demolished after the second siege . Île Royale remained formally part of New France until it was ceded to Great Britain by the Treaty of Paris in 1763 . It was then merged with the adjacent , British colony of Nova Scotia ( present day peninsular Nova Scotia and New Brunswick ) . Acadians who had been expelled from Nova Scotia and Île Royale were permitted to settle in Cape Breton beginning in 1764 , and established communities in north - western Cape Breton , near Cheticamp , and southern Cape Breton , on and near Isle Madame . </P>
when did cape breton become part of nova scotia
when did cape breton become part of nova scotia
1763
1763