Answer:
John Stuart Mill laid the groundwork for today's experimental method regarding the method of agreement and the method of difference.
Step-by-step explanation:
In the year1843, In the system of Logic, John Stuart Mill have given the five methods of experimental reasoning. These methods can be very useful for the person who wanted to evaluate the factors which play crucial role in causing special Effect E, due to specific circumstances. The method of difference define some factor which takes place on some occasion when E takes places and can remain absent on other occasion when nothing happens. Similarly, Method of Agreements accounts for all the factors which takes places when E occurs. Such common factors can accounts for agreement or differences in order to identify cause.