A real common trait of civilization is the development of instruments that allow them to conquer; or to defeat their enemies, these are the weapons. Although, mainly used with non-pacific purposes its developments also brings further enhancements of the engineerial and scientific research.
The arquebus was a common weapon in Europe during the 15th century. Requiring utmost concentration on the handler due to the way on how the mechanism worked. However, it was pretty inaccurate at long range and caused deafness in the user.