Not until years after the war was over did men fully realize that slavery was weight and free labour wings to the people.
Support them if you like; we'll put in free labour and have done with it.
free labour alone, by obtaining the upper hand in the country, can remedy these things.
A master who pays dearer for slave labour than for free labour.
In its great extent, some counties are occupied almost exclusively by free labour, and some have a large slave population.
It is to a certain extent despotic, and interferes with free trade, free labour, and free communication.
It is remarkable that in this first outline of the city Plato recognises only free labour, not slave labour.
The war was a war between two civilizations, one based on free labour, the other on slavery.
Guizot treats the change from slave to free labour as a mystery.
After a fortnight, free labour became available and rapidly grew in extent.