Why is a long stick easier to break?

     When we try to break a stick by bending it we use lever of the first kind in which the fulcrum lies between the load points, in this case, right below the point where the stick breaks. Since the force generated at the break point depends on the length of the lever arm, which in this case is the distance from the break point to the stick end, a longer stick is easier to break as it needs less effort compared to that needed to break a short stick.