The Importance of Mutual Influence in World History

The model of imperial exchange or this model of borrowing interaction, mutual influence is accepted more and more today. It's just very hard to teach. If you're trying to teach world history with five world regions and a single chapter, right, the students are like, which end is up here? And we get that. But it is much harder, but it is the challenge, I believe, that we have to rise to.