In this video, John Green mostly talks about Mansa Musa, and how he built his empire from the ground up, and how successful he was in doing so. He also mentions the spread of Islam and how much it got around. He briefly talks about trade, the impressive architecture and the many empires.
Effects on the Modern Day World
The Silk Road had great effects on the modern day world such as giving us a guideline for communication. The Silk Road was a beginning/starting point of communication. Since then, we've built off from that, and can now communicate in less than a second, and we have cars instead of horses or camels, and streets and sidewalks instead of sandy walkways.