The use of women, children and immigrant allowed industrialists and factory owners to keep wages low for native born men. This was an important catalyst for the organization of labor unions, Children often worked long hours for low pay. The same was true of women and immigrants.
I would not because it seems dry down there
There were many ideas that Rousseau and Voltaire gave the french people, but perhaps the most important was the idea of liberty and freedom from tyranny.
Was good for having a civilized army