Final answer:
By the 1850s, the Underground Railroad had shifted its ultimate destination to Canada, where numerous black Canadian communities developed. Estimates suggest that at least 30,000 slaves, and potentially more than 100,000, escaped to Canada via the Underground Railroad.
Step-by-step explanation:
By the 1850s, the Underground Railroad had indeed shifted its ultimate destination to Canada. Estimates suggest that at least 30,000 slaves, and potentially more than 100,000, escaped to Canada via the Underground Railroad. The largest group settled in Southern Ontario, where numerous black Canadian communities developed. Despite the British colonies' abolition of slavery in 1834, discrimination was still common upon the fugitives' arrival at their destinations.