What is a Shell from World War 1?

Why did WW2 end? How did the black hand gang get their weapons? What was Germany's 'lightning war' called? During world war 2 on whose 'side' did the Viet Minh fight? Where did tanks come from? What was an effective weapon in World War 1 because the vapors given off caused burning swelling of nose throat and eyes and often death? Who invented the Chinook helicopter? Why are air bombs dangeour? What shipwreck happened on may seventh 1915? What war was placed between the English and British? Where was the World War 2 Camp Washington located? What was a technological advance in the Civil War? Why did the conscientious objectors refuse to fight? How many people died on D day in World War 2? Did the north have a industrial base? Which nations were rivals in the 100 years war? What is afo for orthopedic leg braces? Who did Vietnam fight against in the Vietnam war? What is the one song played during the Vietnam War? How longdoes an aircraft carrier stay at sea?