Why does King Mark of Cornwall eventually kill his nephew, Tristam, after sending him to fetch his wife? a. because Merlin told King Mark to sacrifice Tristam to maintain peace in his kingdom
b. because King Mark did not approve of Tristam befriending King Arthur
c. because King Mark does not want Tristam to take over his throne
d. because he suspects Tristam and Iseult to be in love with each other

Tristan dies of grief, thinking that Iseult has betrayed him, and Iseult dies swooning over his corpse. Some texts of the Prose Tristan use the traditional account of Tristan's death as found in the poetic versions.

the answer is "by providing data about careers and annual mean wages"

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: