2017 is the one hundredth anniversary of the Americans officially entering the First World War, and so this week Jem and Greg look at why they entered, and how history could have been different had they joined the other side.

The Condensed History Gems podcast is a bi-weekly podcast hosted by Greg Chapman, juggler and comedy entertainer from Condensed Histories (@condensedhist) and Jem Duducu, history writer of HistoryGems (@historygems). Each week we have a half hour discussion episode, as well as a shorter ‘Fast 5’ episode featuring one of the two. Subjects range through history, from pirates to Saxons, Vikings to Victorians, and Romans to the Cold War! Find out more about the podcast at www.condensedhistories.com/gems