Cities like London and Paris have become among the largest in the world, thanks in part to its climate.

unless they converted, many non-christians (mainly jews and muslims) were persecuted

i believe the answer is:   psychological  experiment

in this experiment, wilhelm wundt became the first person that implement scientific method in analyzing the pyschological phenomenon.

due to this result, wilhelm wundt also able to make psychology to be acknowledged as a separate scientific field from biology.

answer; a council of the best hunters;

answer; /// the above statement is (true );