Why did the conflict in korea escalate?
a. north korea invaded south korea.
b. the u. n. became involved in the conflict in an attempt to stop war.
c. the united states sent in troops and medical units to support south korea.
d. it escalated for all of the above reasons.

It escalated when North Korea Invaded South Korea, When the UN became involved in the conflict to stop war, and also when the US sent in troops and medical units to support South Korea.

So, D

explanation: we can only guess at how our actions may be perceived in the future. doing something really big like killing lots of people, saving lots of people, affecting the lives of lots of people is a sure fire way of being remembered in historical records. we can also make a difference in the history records by being a small influence on something bigger, whether that is as a civil servant, scientist or artist.

of course you could argue that we all affect history just as tiny cogs in a   bigger machine.

if you mean how do people influence our opinions of things which have already happened, then simply by writing a book which looks at things form a different perspective and trying to convince people that this perspective is more accurate or truthful. people do it all the time i.e. richard the third was a terrible or was he? plenty would disagree, it's just that their views aren't the most widely known.n:

well the fact it is basically a peninsula allowed trade to come from many places, thus allowing cultural diffusion to take place. india has seasonal monsoons that merchants travel back and forth from india using the monsoons wind patterns