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4. China Generated Wealth and Developed Economically. Silk and porcelain were the two bestselling products over the centuries of the Silk Road trade. Silk was the most valuable export on the Silk Road since it was light, easy to transport, and was said to be worth its weight in gold during the Roman era.

Explanation:

Silk is a fabric first produced in Neolithic China from the filaments of the cocoon of the silk worm. It became a staple source of income for small farmers and, as weaving techniques improved, the reputation of Chinese silk spread so that it became highly desired across the empires of the ancient world. As China's most important export for much of its history, the material gave its name to the great trading network the Silk Road, which connected East Asia to Europe, India, and Africa. Not only used to make fine clothes, silk was used for fans, wall hangings, banners, and as a popular alternative to paper for writers and artists.

Origins & Cultivation

Silk is produced by silk worms (Bombyx mori) to form the cocoon within which the larvae develop. A single specimen is capable of producing a 0.025 mm thick thread over 900 metres (3,000 ft) long. Several such filaments are then twisted together to make a thread thick enough to be used to weave material. Fabrics were created using looms, and treadle-operated versions appear in, for example, the murals in tombs of the Han dynasty (206 BCE - 220 CE). The silk could be dyed and painted using such minerals and natural materials as cinnabar, red ochre, powdered silver, powdered clam shells, and indigo and other inks extracted from vegetable matter.

i think b

Explanation:

2 is armenia i think