D. because they were trying to separate from the south
Answer:1) 3. 1973
2) 3. Saigon
Explanation: In 1973, the United States officially pulled their troops out of the war after 18 years of fighting.
North Vietnam in 1975 closed in on Saigon and bombed it, hence "The Fall of Saigon."
Answer:
The Naval Arms race between the United Kingdom and Germany was the largest Arms race that brought hostilities during that time
