Is used to understand the impact of independent variables on a particular dependent variable.

I believe the answer is: Casual research

Casual research is the type of research that being done in order to find a simple cause and effect relationship. This type of research is being done by matching up various independent variables in order to see if the match up could cause a certain type of change or reaction to the dependant variables.

because he was a christian?

answer; ///i believe the correct answer is the empire state building;