Just like there was no Bronze age, Middle Ages or Third World. It doesn't mean that we cannot use the terminology or that it's necessarily wrong, it's just limited and we need to understand the limits

ya, there were a bunch of trade routes along this path to all the different regions/cities. We just named the entire concept the "Silk Road" in the 1800s (it was coined in 1877 by Ferdinand von Richthofen).