The banknote (also known as paper money or note) was one of them. Marco Polo was particularly surprised when he first encountered it. Banknotes were not made out of paper, but out of the bark of the mulberry tree. Other products or inventions included the compass, the gunpowder and the printing.
The translation in English is : what alternative technological solution allows the efficient use of water in the agricultural work of the family and community. Hope this helps :)
Soldiers' morale was low and there was a lack of discipline.
Rule of law the fourth choice is correct
