Final answer:
The arrival of escaped slaves in Canada led to social and economic challenges due to poverty, racial prejudice, and discrimination, despite the success stories of a few individuals.
Step-by-step explanation:
The effect of slaves needing shelter, food, and jobs when they arrived in Canada led to social and economic challenges. These individuals, though now free, often faced poverty and racial prejudice. Many lived in segregated areas and were met with discrimination. While some former slaves, such as Thornton and Lucie Blackburn, succeeded as entrepreneurs, and others became newspaper editors or politicians, the majority still endured significant hardships. The settlements they formed, however, eventually contributed to Canada's multicultural landscape and economy over time despite the initial difficulties they faced in assimilating and finding economic stability.