Which best describes the silk road?

The statement 'a network of trade routes over land and sea linking Europe and Africa to Asia' best describes the silk road.

Explanation:

The silk road was an ancient route that was used by the traders of silk and other commodities residing in southeast Asia to reach Persia, Arabia, North Africa, and eastern Europe.

This road played an important role in the trade between the southeast Asian countries (mainly China) and the countries in Europe and Africa. The route was discovered in 3rd century BCE and remained active for centuries after.

d.) greenhouse gases