What gas did not kill people in ww1?

Who announced that Britain was at war? What was used before buttons? What is a Cadmean victory? What is the origin of bivouac? When were all the confederate states admitted back into the union? What was the goal of the allied island hopping campaign in the pacific? Explain how the United States was able to defeat the Japanese in the Pacific theater? Steel penny used for in world war 2? How much were knights paid during the Middle Ages? What instrument do the drums belong to? What was the weather like during D-Day? Where did the Lend Lease Act take place? Complete mobilization of resources and people? In My Brother Sam is Dead why did Tim prefer to sell the cattle to the British rather than to the patriots? What pins were used in World War 2? In By 1793 which countries were at war with France? How was the Civil war first modern war? What is an exact date of monetary reform in USSR in 1947? When did the battle of cambrai take place? What percentage of the Jewish population left Germany?