BREAKING HISTORY: How Did World War I Start?

Jesse asks author Mark Moyar how World War I even got kicked off? The beginning of the 20th century was a dawn of a new age where many thought we'd completely moved past the idea of war. However, in secret, nations were developing their arsenal in order to outwit their unsuspecting rival countries. The real spark that blew the powder keg though was the assassination of Franz Ferdinand in then Austria-Hungary.