Maybe you could make a POV of a boy who was in it! :)
Answer:
The 16th and 17th centuries known as the "incubation period of the modern world" because of the breakthroughs that occurred in the use of water and wind energy for the completion and powering of various industries.
There was also the issue of military revolution which occurred around that time and was the period in which gun powder production started . This led to subsequent production of other weapons during this period.
I believe the answer is...
The Treaty of Versailles
Japanese Expansion
Fascism
Appeasement
Great Depression and more ...hope that helped
Nixon - vietnamization makes no sense because Nixon wasn't president until the 80's