What were the 13th, 14th and 15th amendments supposed to do and did they succeed?

The 13th Amendment abolished slavery

The 14th Amendment states all people born or naturalized in the United States are citizens

The 15th Amendment gives everybody the right to vote no matter that citizen's race or color

All of these succeed because they allowed all African Americans to be free from slavery and granted them the right to citizenship. All Amendments are still enforced to this day and will never be removed from the Constitution.

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:

the use of email to replace slower surface mail.