They were trying to accomplish better working conditions and better pay for the field workers.
The microscope by using tiny glass leanse to see the cells.
The collapse of the cattle kingdom. A combination of factors brought an end to the cattle kingdom in the 1880s. The profitability of the industry encouraged ranchers to increase the size of their herds, which led to both overgrazing (the range could not support the number of cattle) and overproduction. but i think this may help