August 1 is recognized as Emancipation Day in Canada, marking the end of slavery which persisted from 1628 until 1834. The document discusses key historical figures and events related to Canadian slavery, including the first documented enslaved African, Olivier Le Jeune, and the struggles of enslaved people like Chloe Cooley. It also highlights the ongoing legacy of slavery in Canada and the celebrations of Emancipation Day by African Canadians.