Based on this graph, what conclusion can someone draw?

here use this but do not copy and paste every thi ng right in some of you own words and write where you got your answers cfrom

Explanation:

The vast trade networks of the Silk Roads carried more than just merchandise and precious commodities. In fact, the constant movement and mixing of populations brought about the widespread transmission of knowledge, ideas, cultures and beliefs, which had a profound impact on the history and civilizations of the Eurasian peoples. Travellers along the Silk Roads were attracted not only by trade but also by the intellectual and cultural exchange taking place in cities along the Silk Roads, many of which developed into hubs of culture and learning. Science, arts and literature, as well as crafts and technologies were thus shared and disseminated into societies along the lengths of these routes, and in this way, languages, religions, and cultures developed and influenced one another.

Silk is a textile of ancient Chinese origin woven from the protein fibre produced by the silkworm as it makes its cocoon. The cultivation of silkworms for the process of making silk, known as sericulture, was, according to Chinese tradition, developed sometime around the year 2,700 BCE. Regarded as an extremely high value product, silk was reserved for the exclusive usage of the Chinese imperial court for the making of cloths, drapes, banners, and other items of prestige. Its production technique was a fiercely guarded secret within China for some 3,000 years, with imperial decrees sentencing to death anyone who revealed to a foreigner the process of its production. Tombs in Hubei province dating from the 4th and 3rd centuries BCE contain the first complete silk garments as well as outstanding examples of silk work, including brocade, gauze and embroidered silk.

At some point during the 1st century BCE, silk was introduced to the Roman Empire, where it was considered an exotic luxury that became extremely popular, with imperial edicts being issued to control prices. Silks popularity continued throughout the Middle Ages, with detailed Byzantine regulations for the manufacture of silk clothes, illustrating its importance as a quintessentially royal fabric and an important source of revenue for the crown. Additionally, the needs of the Byzantine Church for silk garments and hangings were substantial. This luxury item was thus one of the early impetuses for the development of trading routes from Europe to the Far East.

Knowledge about silk production was very valuable and, despite the efforts of the Chinese emperor to keep it a closely guarded secret, it did eventually spread beyond China, first to India and Japan, then to the Persian Empire and finally to the west in the 6th century CE. This was described by the historian Procopius, writing in the 6th century:

"About the same time [circa. 550 CE] there came from India certain monks; and when they had satisfied Emperor Justinian Augustus that the Romans should no longer buy silk from the Persians, they promised the emperor in an interview that they would provide the materials for making silk so that never should the Romans seek business of this kind from their enemy the Persians, or from any other people whatsoever. They said that they were formerly in Serinda, which they call the region frequented by the people of the Indies, and there they learned perfectly the art of making silk. Moreover, to the emperor who plied them with many questions as to whether he might have the secret, the monks replied that certain worms were manufacturers of silk, nature itself forcing them to keep always at work; the worms could certainly not be brought here alive, but they could be grown easily and without difficulty; the eggs of single hatchings are innumerable; as soon as they are laid men cover them with dung and keep them warm for as long as it is necessary so that they produce insects. When they had announced these tidings, led on by liberal promises of the emperor to prove the fact, they returned to India. When they had brought the eggs to Byzantium, the method having been learned, as I have said, they changed them by metamorphosis into worms which feed on the leaves of mulberry. Thus began the art of making silk from that time on in the Roman Empire."

Beyond Silk: a diversity of routes and cargos

These routes developed over time according to shifting geopolitical contexts throughout history. For example, merchants from the Roman Empire would try to avoid crossing the territory of the Parthians, Rome’s enemies, and therefore took routes to the north instead, across the Caucasus region and over the Caspian Sea. Similarly, whilst extensive trade took place over the network of rivers that crossed the Central Asian steppes in the early Middle Ages, their water levels rose and fell, and sometimes rivers dried up altogether, and trade routes shifted accordingly.