Time of the American Revolution (1775–1783), the status of slave had been institutionalized as a racial caste associated with African ancestry. When the United States Constitution was ratified (1789), a relatively small number of free people were among the voting citizens (male property owners). Type of slavery: Bonded labor this is also known as “debt labor” since the person is being exploited to whom they are unable to pay off their debts. Bonded laborers must keep working until the time they pay off the entirety of their debts. In this, the employer may enter an agreement with the debtor, but still the terms and conditions remain unlawful in most of the civilized world.