Why was slavery so perpetual in Colonial and later American society? What were some of the mechanisms that enabled this process to continue way into the XIX century!

Read the attached to this week 2 (FILES) “Color Line.PDF” file from Peoples History of the United States by H. Zinn and  respond with 280. words  to the following questions: Discussion Forum Topic for week 2: Why was slavery so perpetual in Colonial and later American society? What were some of the mechanisms that enabled this process to continue way into the XIX century! Provide evidence-based examples and analysis.