Greece is strategically located at the crossroads of Europe, Asia, and Africa. Situated on the southern tip of the Balkan peninsula, it shares land borders with Albania to the northwest, the Republic of Macedonia and Bulgaria to the north, and Turkey to the northeast. Greece consists of nine geographic regions: Macedonia, Central Greece, the Peloponnese, Thessaly, Epirus, the Aegean Islands (including the Dodecanese and Cyclades), Thrace, Crete, and the Ionian Islands. The Aegean Sea lies to the east of the mainland, the Ionian Sea to the west, the Cretan Sea and the Mediterranean Sea to the south. Greece has the longest coastline on the Mediterranean Basin and the 11th longest coastline in the world at 13,676 km (8,498 mi) in length, featuring a vast number of islands, of which 227 are inhabited. Eighty percent of Greece is mountainous, with Mount Olympus being the highest peak at 2,918 metres (9,573 ft).
The United States finally decided to join the World War I on side of the Allies mainly because of the following 2 reasons:
* The first one was the proposal made to Mexico in order to join the war against the allies, which meant the war was getting closer to American land.
* The second one was the German submarine attacks on American merchant ships.
After these two events took place, Woodrow Wilson the American president at the time talked to the Congress and requested it to declare war on Germany. And finally the Congress declared the war on April 6th, 1917.
Answer: [D] Both wars sparked worry about the spread of communism which were a part of a larger conflict between the United States and the Soviet Union.