Pearl Harbor wasn't really a "battle", more-so it was a surprise attack by the Japanese on US soil. Many American lives were lost, so it is considered a devastation loss. The US decided to join the war against Japan and its allies because of the unprovoked attack.
The Silk Road was used to trade gold, salt, and other items between nations and cities, and both the Roman Empire and the Han Dynasty in China were connected and their merchants used it.
Toward the end of the 16th century and at its height, the "Songhai" Empire comprised a landmass larger than Western Europe, since this was the dominant trading a cultural center in the area.
