Hehe that reminds me of the time I taught my high school history class about WWI and WWII. The teacher covered the political developments important for the test, and I got to cover the major battles, technological advancements, and other major military developments during both wars. That was fun...

hansvonpensch, if your son has time in his presentation, he might want to cover some of the other major developments that led to the invention of the destroyer, such as the whitehead torpedo and the Parsons steam turbine. Of course, don't do it if he doesn't have enough time to properly explain them.