Many Germans felt like they had been treated too harshly after WW1 in terms of war costs and debts owed to Britain and France and such; they felt manipulated and used. The Germans also suffered a hostile French military occupation post WW1 which contributed to the resentment. Hitler offered a radical sense of power and stability back to the people, something that appealed to them after many years of what they felt was mistreatment by other European nations. Thus, by means of the Enabling Act in 1933, Hitler rose to dictatorial power.
John Wallis was an English clergyman and mathematician who is given partial credit for the development of infinitesimal calculus. Between 1643 and 1689 he served as chief cryptographer for Parliament and, later, the royal court. He is credited with introducing the symbol ∞ to represent the concept of infinity.
The south approved slavery because slaves were useful to them on their cotton farms. However, after the invention of cotton gin many saw that they didn’t need to slaves to work for them on the cotton fields anymore as it was easier to own a machine which would do the work instead. They saw the slaves as pointless and impractical after the invention.
