Your answer would be trade. Hope this helps!
Answer: Basic Research
Explanation: Basic research is done specifically to add to our general understanding of psychology, like distinguishing the components of extraversion or predicting the time it takes a person to determine whether an object is a face or another object.
It took that long because there was a war between protestants and christians following Luther's writing of the 95 theses which was very gruesome. After this war subdued, the church was finally ready to accept peace.
Professional organizations that controlled how their industry operated and protected their members' interests against outsiders were called "special interest groups", since they look out for the interest of their members.