D; It was from the Gadsen purchase
It gave empires new technologies and attracted more people
They are experiencing Discrimination.
Hope this satisfies your query! Have a good one :)
U-Boat attacks affected fighting on land by being able to strike fire onto land before sending troops to fight on the beaches.
One of the main reasons why a historian would use a primary source when studying a historical event is because "<span>C. Primary sources are created by people who actually experienced the event", and they can also be things that happened to be "around" at a certain time. </span>
