The two systems slave and free-labor are incompatible. They have never permanently existed together in one country, and they never can.
![The two systems slave and free-labor are incompatible. They have never permanently existed together in one country, and they never can.](http://cdn.quoteddaily.com/images/william-h-seward/the-two-systems-slave-and-free-labor-are-incompatible-they-have-never-permanently-existed-together-in-one-country-and-they.jpg)
The two systems slave and free-labor are incompatible. They have never permanently existed together in one country, and they never can.