From
https://en.wikipedia.org/wiki/History_of_slavery :
The history of slavery spans many cultures, nationalities, and religions from ancient times to the present day. However the social, economic, and legal positions of slaves were vastly different in different systems of slavery in different times and places.
Slavery can be traced back to the earliest records, such as the Mesopotamian Code of Hammurabi (c. 1860 BC), which refers to it as an established institution, and it was common among ancient people...
Although slavery is no longer legal anywhere in the world (with the exception of penal labour), human trafficking remains an international problem and an estimated 25-40 million people are enslaved today, the majority in Asia.
Slavery is absolutely ubiquitous across both time and cultures.