Answer:
Because fort Sumter allowed the confederates to create a valuable hole in the union
Explanation:
The Declaration of Independence states that when the govt abuses its power, the people have a right to change the government or even overthrow it.
As for the rivers, the colonists were aware you must have water to successfully maintain life whether it be human life or plant life, it is necessary. Also being close to water helped them in the workforce, like carrying out trade or fishing It was a "win win" for them.
