Collusion: Oligopolistic firms can explicitly or implicitly collude on the price to be set, share the markets, or reduce the output. Most countries have outlawed explicit collusion but sometimes, firms can implicitly collude-that is, unwittingly agree to forego competitive behavior, but some airlines in a similar trend hike up their air tickets at the same time, and that is considere... https://finxl.in/financial-modelling-online-classes-courses-training.html