Which soviet union leader met with president regan in a series of important meetings

Soviet General Secretary Mikhail Gorbachev. The two "leaders" met for the first time to hold talks on international diplomatic relations and the arms race.

Explanation:

Secretary Mikhail Gorbachev

During Reagan's second term, he sought closer relations with Soviet leader Mikhail Gorbachev, and the two leaders signed a major arms control agreement known as the INF Treaty.The Moscow Summit was a summit meeting between U.S. President Ronald Reagan and General Secretary of the Communist Party of the Soviet Union Mikhail Gorbachev.

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:

he sent troops to protect the students as they entered the school.