Servants are not slaves, just products of capital exploitation.
Some families are so poor that they can't make ends meet, so they "sell" their children over 14 years old to companies.
The companies pay them a sum of money and then sign an 80-year labor contract with the children, agreeing to provide them with wages, food and lodging, and entrusted training among other benefits.
During these 80 years, the children are obligated to serve the company as the party of the second part.
If they want to terminate the contract within this period, they must pay a huge sum in damages to the company.
A sum they simply cannot afford to pay.
Eighty years is the maximum contractual period mandated by the Inner World labor laws, while fourteen is the minimum age for signing a labor contract.
If a servant starts serving at the age of 14 and doesn't die by 94, they gain their freedom.
But in fact, it's rare for servants to live to 94.
Hence, over time, the term "servant" was born.