WORLD HISTORY

Detailed explanation-1: -a major advancement in technology during the Han dynasty. People created it from hemp or rag pulp. created by Qin Shihuangdi, helped to unify China under one system of money. Built to keep out invaders from the North.

Detailed explanation-2: -Besides its use for writing and books, paper was used to produce topographical and military maps from the Han dynasty onwards.

Detailed explanation-3: -For tilling the soil and planting straight rows of crops, the improved heavy-moldboard plough with three iron plowshares and sturdy multiple-tube iron seed drill were invented in the Han, which greatly enhanced production yields and thus sustained population growth.

Detailed explanation-4: -The birth of paper, as we know it today, took place under the Chinese Han Dynasty in AD 105. Ts’ai Lun, a court official, invented a papermaking process which primarily used rags (textile waste) as the raw material with which to make paper.

Detailed explanation-5: -The Han dynasty Chinese court official Cai Lun (c. 50–121 CE) is credited as the inventor of a method of papermaking (inspired by wasps and bees) using rags and other plant fibers in 105 CE.