During the 1800s, the writings of marx, engels and dickens focused attention on the problems faced by

a. factory owners
b. investment bankers
c. farm laborers
d. industrial workers?

bias opinions and using a push pull

question as stated in comment

why did the chinese require the portuguese to pay for goods in gold and silver when trading?

choices

portuguese goods were less valuable than chinese goods.

the chinese already had a surplus of portuguese goods.

the imperial government wanted to stockpile gold and silver.

portuguese and chinese currencies were not exchangeable.

this a history q n in ancient time, theres no money exchange. so ans is portuguese and chinese currencies were not exchangeable.