How did the recent horizontal integration in the U.S.airline industry provide benefits to the surviving carriers?

Question

Quizplus · Accepted Answer

Recent horizontal integration in the U.S. airline industry, for example, provided several benefits to the surviving carriers. By reducing excess capacity, the mergers between Delta and Northwest Airlines (in 2008), United Airlines and Continental (in 2010), Southwest and AirTran (in 2010), and American and U.S. Airways (proposed in 2013 but put on hold by the U.S. Department of Justice) lowered competitive intensity in the industry overall.

How Did the Recent Horizontal Integration in the U