How did ancient China begin to move away from bartering, or directly exchanging goods? In other words, how did the ancient Chinese make sure the amounts of items traded were equal and fair?

you should think about the answers you give and expect the same form your questions.

q1: artillery

q2: simon bolivar

q3:   their workers and farmers demanded a return to spanish rule.

q4: drafted new constitutions

q5: oligarchies have replaced monarchies

it is a better alternative

could you go a bit more in depth with you question? it's quite hard to understand. as soon as you do that i will be glad to : )