The first reason is their size. They are very small and are very difficult to see. Special technology needed to be developed in order to observe them and their behavior and reach the conclusion that they were in fact infectious agents that could cause diseases. This wasn't possible before because the microscopes weren't as well developed.
Another is that they have a very long incubation period. This means that if you have them, a long time will pass before they start harming you which meant that many people believed them to be harmless since they couldn't track their behavior over a longer time period, also due to the lack of good technology.
Charles Fourier was a French social theorist who advocated a reconstruction of society and was one of the founders of utopian socialism.
According to Charles Fourier, poverty is the principal cause of disorder in our society. He proposed to eradicate it by having sufficiently high wages and a decent minimum to those people who cannot work.
His discovery of the role of oxygen. He recognized and named oxygen and hydrogen and opposed the phlogiston theory. He helped construct the metric system, wrote the first extensive list of elements, and helped to reform chemical nomenclature.
the Industrial revolution was the boom of factories to produce products such as clothes. The factories main use was cotton. When the demand for cotton increased the more cotton was needed to be produced in turn making agriculture rise slightly. Everyone benefited except the slaves. Another effect was the poor working conditions in the factory that led to a working class revolution
The Ku Klux Klan was controversial in the 1920s not only because of its intolerance and promotion of vigilante violence, but also because of its entry into.
