world history; international history
Refers to the study of history from a global perspective, often as a school subject. 'International history' is a less common gloss, used in contexts emphasizing relations between nations.
I'm studying world history in high school.
World history class is very interesting.
日本史 covers the history of Japan alone, while 世界史 covers world history, so the two are commonly paired as contrasting school subjects.
Compound of 世界 (world) and 史 (history).