How did printing spread to the west?

1. Printing was spread by Uighurs who lived in western Gansu and eastern Xinjiang in ancient times, and the time was about 13 to14th century.

2. Printing was introduced to the west in the early years of Yuan Dynasty (A.D. 127 1 to 1368), and was introduced to the conquered European countries through the printing craftsmen of the Mongolian army.

Printing spread all over Persia (now Iran). After Genghis Khan 122 1 captured Persia, printing also spread to Persia, Arabia and other countries, and then to the west.

Printing spread through the Crusades. From 1096 to 1270, Europe launched eight Crusades, which brought a lot of China printing materials and related technologies to Europe.

5. Printing was introduced through Russia. /kloc-from the middle of the 3rd century to the middle of the 4th century, Russia was under the rule of Mongols, and printing was probably introduced to Russia from China first, and then to Europe from Russia.