The Union strategy to gain control of the Mississippi, and cut the Confederacy in two parts, was successful at the battle of

A Antietam

B Gettysburg

C Vicksburg

D Fort Sumter

The correct answer is C. The Union strategy to gain control of the Mississippi, and cut the Confederacy in two parts, was successful at the battle of  Vicksburg.

Explanation:

The Battle of Vicksburg took place from May 19 to July 4, 1863 around the small town of Vicksburg, Mississippi. It was the last battle of the Second Vicksburg Campaign and is considered a crucial battle of the Civil War.

The battle began with two unsuccessful attacks by the Union's Tennessee army on the Confederate positions outside Vicksburg. Ulysses S. Grant then began to siege the city, which after six weeks and one day on Independence Day resulted in the surrender of the Confederate Mississippi Army defending the city. With the fall of Vicksburg, the Confederation lost its penultimate base on the Mississippi. With the subsequent surrender of Port Hudson, Louisiana, the entire Mississippi Valley was under Union control, and the Confederation was split in two.

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:

women should have the same rights as men