World history can look at the big picture. Instead of zeroing in on what happened in select states or regions during a historical period, it often examines what occurred globally. The emphasis of this field of study may be on the themes and patterns that have shaped the planet.

Requirements for the PhD program often involve the student having already obtained a Master’s degree. Additionally, a thesis or dissertation primarily consisting of original academic research must be submitted. In some countries, this work may even need to be defended in front of a panel.