After World War II, why did the USSR want to control countries in Eastern Europe?
The USSR mostly needed the region’s raw materials for its own economy.
The USSR primarily wanted to unite all of the people under one religion.
The USSR had controlled most of these countries before the war.
The USSR needed to protect its western border from future attacks.

A, B, C, D is correct. All are correct.

Explanation: USSR needed to export its bolshevik revolution. In eastern European countries there were local Communist parties that were already before WW II under the control of Moscow. After victorious war USSR got extremely popular, viewed as a saviour and together with them also local Communist parties. Even Italy had post-war Communist party strong and powerful. After the WW II all these Communist parties were represented in governments and later undertook coups.

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: