Operational definitions are statements of the procedures used to define the research variables in a study. having these other researchers the study.

Operational definitions are statements of the procedures used to define the research variables in a study. having these helps other researchers "replicate" the study.

An operational definition, when applied to information gathering, is an unmistakable, succinct point by point meaning of a measure. The requirement for operational definitions is central when gathering a wide range of information. It is especially critical when a choice is being made about in the case of something is right or off base, or when a visual check is being made where there is space for confusion.  

explanation:

with the profits from the european sales, merchants purchased europe's manufactured  goods, including tools and weapons. then the merchants shipped those manufactured  goods, along with the  american  sugar and rum, to west africa where they were bartered for  slaves.