Why were the battles of Gettysburg and Vicksburg significant

The Battle of Gettysburg ended the Confederates' last major invasion of the North and is viewed by some as the war's turning point. The Confederate loss of Vicksburg was perhaps more important because it opened the way for the North to seize control of the entire Mississippi River, cutting the Confederacy in half.

Explanation:

the us constitution is a living document, meaning that it can be changed over time as the country changes.

i believe it to be a democracy