Which weapon was MOSTresponsible for keeping soldiers from both sides in the trenches in World War I?
airplanes
tanks
machine guns
mustard gas

a big wall across the mexican border so no drugs, terrorist, or illegal immigrants can come through : )    

john smith was the first englishman to sail around the world. francis bacon served as attorney general and lord chancellor of england. he took up aristotelian ideas, arguing for an empirical, inductive approach, known as the scientific method, which is the foundation of modern scientific inquiry.