What event marked the beginning of the US Civil War? The main cause of the Civil War has been debated for years. The first military action was Confederate forces attacking Union Fort Sumter.
1 Lift Charts. 2  The lift curve is a popular technique in direct marketing. 3  The input required to construct a lift curve is a validation dataset that has been scored by appending to each case the estimated probability that it will belong to a given class.
Lift is an artificial force manipulated by pilot; it is generated through the wings, acts perpendicular to the relative wind and wingspan. The theoretical concept that summarizes the direction and force of lift is the centre of pressure.