Answer:
John Locke And Isaac Newton
Explanation:
Some of theses changes should occur when there is no war going on. This is to make the country be modernized by the technology. If there is a war going on, the improvement of each technologies will be lessen and could possibly be stopped.
1 is marines.
8 across is enlist
9 down is soldier
10 down is army I think.
13 across is navy. I think lol.
The answer is "theory". It's a possibility that's neither fact or opinion.