The dep. of Treasury (most likely), it has existed since Washington's presidency.
Answer:
During the war, the United States was supplying goods to the nations opposing Germany. This led to Germany conducting unrestricted submarine warfare where they would perceive any convoy supplying their enemies as enemy ships. This meant that they started sinking ships of neutral US and angering the nation.
There were many obstacles to overcome in building the canal. The dense jungle, The elevation of the mountains, Getting the soil and rock out of the way, The difference in tides between the Pacific and the Caribbean. and diseases like Malaria and Yellow Fever. I hope this helps you out and have a good day. :)
Answer:
Territory
Extra:
The US has five territories: American Samoa, Guam, the Northern Mariana Islands, Puerto Rico and the U.S. Virgin Islands