I believe what you're looking for is economics, but I could be wrong.
A human resource department is also in charge of keeping employees safe, healthy, and satisfied. With proper HR management, workplace policies keep up with necessary protective measures and implementation and provide solutions to issues between team members, avoiding risk for the company and its employees.
The silk road stretched 4000 miles from China to the Mediterranean Sea and was linked to the Mediterranean countries by ports and ships. It included China, India, Persia and Arabia and allowed for two-way trade of such things as silk from China and woolen goods such as carpets, curtains, blankets and rugs came from the western countries along the route, for example.