Misc: What is Birchibald T. Barlows book called??

Questions

Weapon resembling a short sword or a dagger, designed to be attached to the muzzle of a rifle or musket?

Weight carrying structure that can travel through the air, supported either by its own buoyancy or by the dynamic action of the air against its surfaces?

Welsh mercenary bowmen in the medieval period only wore one ____ at a time?

Were ignition keys first used to start cars in 1910, 1936 or 1949?

Western civilization discovered aluminium in 1727, 1787 or 1827?