I believed among all the city states in Greece, the most important was Athens. It was one of the oldest cities of the world and the center for arts, science, architecture, politics, and philosophy. The medieval period was inspired by its culture. This was a place were great Philosophers came; Aristotle, Plato, and Socrates. All of these are essential elements that became a foundation of man's development.
The correct answer is specialization. Indeed, within a capitalist system, workers (especially industrial ones) specialize in only one task that they perform skillfully within a manufacturing system where all the tasks performed contribute to the goal of the fabrication of an industrial product. Fordism and Taylorism included such practices.
It is important for the president to select heads of the executive departments rather than Congress, because The President must rely on these department heads for advice and assistance as he fulfills his duties as chief executive. Such cooperation is positive for the state and definitely effective.
The answer is Greece it has the LARGEST COASTLINE :)