1. World War 1
... to get into enemy's lines was to use the tank. The tank made it easy to tear down barded wire and to get into there enemy's fort. Air planes were the best way of observing troop movement and for dropping explosives. Germany the first nation to use submarines (U- boats) made it tough for other nations to cross the seas. They damaged and destroyed ships as they crossed ... . The Germans also introduced poison gas. In the Great War it was estimated that there were more than 10 ... as many deaths as armed forces After World War 1 there were many changes. The territory's in the central power...
- Word Count: 400
- Approx Pages: 2
- Grade Level: High School