It was the forced removal by the British of the Acadian people from the present day Canadian Maritime provinces of New Brunswick, Nova Scotia, Prince Edward Island, and the present day US state Maine — parts of an area historically known as Acadia, causing the deaths of thousands of people. Hope this helps!!
The effects were that the African-american population was not able to sue anyone or participate in any Supreme Court cases because they were not considered to be American citizens since their parents were taken there as slaves.