Answer: The battle of Gettysburg!
Because you have been teached this in 5th grade, And the paragraph matches the answer!
Glad to help :)
-liyah❤
D.
For example in New York, the Erie Canal was dug to connect Lake Erie in western NY to Hudson River in eastern side of NY.
Waterway built to allow ship travel vs. slower overland wagons etc.
I believe the answer is: self fulfilling prophecy
Self fulfilling prophecy refers to the prediction that somehow makes itself become true/fulfilled. Other example would be when a person is inherently believe that he is somehow intellectually inferior and cannot do anything to improve their get. This often lead him to not making any efforts since he believes it pointless, which lead to self-fulfilling his initial opinion about himself.