Do to the fact America blamed ww1 on them and made them pay off the war they played off their anger and sadness and were able to be popular because they said the right thing at the right time
An oligopoly is a market structure in which the market is shared between a few firms, this few firms sell identical or differentiated products , and the industry has significant barriers to entry.
The automobile industry considered an oligopoly because there are few leading auto manufacturers which are having significant influence over the industry. All these firms sell identical products. And the last characteristic of an oligopoly is also there: it is very hard for a firm to entry this market because production costs are huge.
The another name for Neolithic period is New Age , hopefully my answer was helpful?