Second Link of Reference

This is a sketch of what a U-boat looked like; it was what
the Germans used to sink American Boats.

The second link explains the basics on what World War one was about. It explains the main points of what the war was about, and what sparked the war. It explained what countries were involved and explained why it was such a big war. It explained how the soldiers felt in the war, and gave the opinions of what the many felt like during the war, whether they were part of it or just citizens. The one aspect of this website that I liked was that they explained the different vehicles that were used.