Then you're not very aware.
During the Gilded Age there were hundreds of strikes a large minority of which ended with the murder of the organizers and arrest of the leadership, an incomplete list thanks to wikipedia:
http://en.wikipedia.org/wiki/List_of_strikes#1850.E2.80.9318...
Still, have you ever heard the song "Sixteen Tons?"[1] You might recognize the lines "another day older and deeper in debt" and "I owe my soul to the company store." It's about the life of a coal miner in Kentucky. Those lines refer to a system where the company paid its workers in vouchers that they could use to buy food and clothing from the company store. Prices at the company store were higher than the workers could afford on the wages they received, but since they didn't get cash they didn't have the option to buy elsewhere. So they'd buy on credit and gradually build up a debt to the company that they had no way to pay off.
Is that slavery? Perhaps not technically, since the workers weren't owned by the company and couldn't be sold. But they didn't have many choices, either. They were basically stuck doing a fixed amount of work each day in exchange for food and lodging. Sounds an awful lot like slavery in practice.
[1] Obligator wikipedia link - https://en.wikipedia.org/wiki/Sixteen_Tons
Whether you live in a desert island, a small village with no water or electricty, or New York, you will still have to face the practical demands of your survival, of which food and lodging are the primary - in the sense that they are the most immediate,- but not your only, concerns. Whether by hunting and killing your own food, or buy buying it from the supermarket, the facts are the same: you have to work for your survival, it is not guaranteed by nature. And for myself,if I may, I take having to work so I can buy my favorite food and drink at the supermarket every day over having to savagely hunt and kill the food I eat.
You ought to rethink what you define as "enslavement". As far as I am aware, neither Rockefeller, nor JP Morgan, nor Carnegie "enslaved" the US population when they helped transform the by then agrarian nation into the industrial and economic powerhouse it later became. They didn't use force, as far as I am aware, in their dealings and the wealth of their achievements certainly wasn't created at the expense of those who didn't.