NEEd anwer for these distinguish questions please.

Yes these topics are mention in economic paper.

@ Priyanka:

Refer below link for your 1st question:

https://www.svtuition.org/2011/04/difference-between-balance-of-trade-and.html

do u want an explaination in order to understand?.i can explain it in simple way... post it in my community if u want ..bye 

yea i wanted to write for cc papers...have to submit it in two days...

so any relevant will do..

thanku everyone