How does the Silk Road compare to the Great Wall?

The Great Wall was built to keep people and ideas out of China; the Silk Road allowed new people and ideas to come in.

The Great Wall was built as a result of religious differences; the Silk Road was a result of economic differences.

The Great Wall was built to protect India; the Silk Road was built to provide a good transportation system.

The Great Wall was built with the emperor's money and resources; the Silk Road was built with money from merchants and craftsmen.