Ghetto is the word used to describe the neighborhoods for Jewish peoples in the middle ages.
Supervolcanoes are different from normal volcanoes. They aren't recognisable by a conical shape that you would imagine a volcano to be. These volcanoes form calderas which are huge craters in the ground after previous eruptions, which are so large that they are often only noticeable from the air above
This is a type of republic that operates under a parliamentary system of government where the executive branch. The government derives its legitimacy from and is accountable to the parliament. The parliamentary republic has various numbers.