Let's start off with what a brief explanation of what social stratification is; Social stratification is a persons ranking in society. Whether it be financial wise (the most common), the age group, education, and even family power. An early form of this could be the Roman Empire's hierarchical structure; they had the lowest class which would be the slaves and then would work their way up to the highest class which would be the Emperor.
I hope this helped.
The vote over whether to allow slavery
Depending on the person, they typically revolve around employment and economic reasons
To give debtors from Britain a fresh start