Why is the automobile industry considered an oligopoly? it offers little differentiation within the market. it has significant barriers to entry. it is controlled by companies that patent key technology it relies on price variation to attract customers it depends on brand loyalty and image to generate sales. it is dominated by a few key players.

music always has an important role in culture and societies, infact for example rock’n roll music has conditioned different areas of pop culture above all in the 60s. in the modern american society its role is different.

unfortunately many think about how some unfortunate events happened to the columbine high school shootings can be related to rock music just because the teenagers involved listened to this kind of music.

i think that we can valorize the change to take refuge in this genre of music to keep on in everyday life, teenagers are comfortable when they can listen to a song about a specific problem. realizing that someone else is living your personal drama too can them to feel less lonely nowadays.

united kingdom

portugal

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germany

the mass production of steel reduced its price and led to its use in many industries.