The use of submarines made attacking or torpedoing ships easily, that made attacking more effective and reduced the chance of home soldiers getting killed.
B) Uranium is not a fossil fuel, but it can be used to provide power in nuclear reactions
Answer: An effect of World War 1 is the downfall of the German Empire, Austrian, and Russian empire.
Explanation: 3 Monarachies were replaced by 3 Republics due to the first world war.
Printing allowed literature to become more available during the Tang Dynasty
