In WWII the americans helped form the UN which is an international governing system that sets world laws on war. After developing this group of nations tjey formed together to destroy the german military.
Chlorine and Mustard gas are types of poison gas, sometimes used during chemical warfare. For example Germany introduced their usage against the Allies during WW1.
Answer:
There were many causes of the Civil War. Some were The Northwest Ordinance, The Compromise of 1850, Kansas VS Nebraska (Bleeding Kansas), The Missouri Compromise, ect. The Civil War was mostly caused because of slavery. The north were against slavery, the south thought they should have Popular Sovereignty (the people chose if they wanted slaves).
