Because there were messages intercepted from Germany to Mexico, telling Mexico to join the war and attack the United States. I hope this helps :)
The highest density for a sovereign country<span> would be for </span>Ecuador (53.69 people/km^2)
Benjamin Franklin created the Albany Plan of Union but faile because the 13 Colonies each had their own ideas and agendas.
The correct answer (c.) Vienna. Vienna is the capital and largest city in Austria and was the European city was divided into four sectors during Cold War. These four sectors or powers were the United State, United Kingdom, France and the Soviet Union.
