Its definitely not 1 or 2, and if the development of a second front is option 4, then it is definitely 4<span />
The expansion led to <span>the invention of a money system.
The expansion allowed many traders from China to exchange goods and services with traders from other nations.
In order to make trading process became fairer to both sides, a money system is needed as a form of valuation on a certain products/services.</span>
As Congress .................for more ask some one else....
Answer: Society
Explanation:
This is because the educational system would be functional members of society therefore it's society as they are referring to more than just a place.