The main way in which inventions such as the telescope and microscope changed the way people saw world is that the former invention allowed them to see into space, which gave a much better representation of Earth's place in the Universe--while the latter invention allowed people to see microorganisms and things like cells, which allowed them to better understand life on earth.
b, a wouldn't make sense because in history in general people have tended to like meritocracy over aristocracy. C and D don't make sense because aristocracy doesn't include how hard a person works for a job
Maximilian Robespierre effectively ruled the nation from 1793-1794. After he was overthrown, a council known as the Directory ruled until 1799, when Napoleon took over. He ruled until 1814, when Louis' brother took the throne.