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.
The primary curve of the spine is the kyphotic curve. This curve is located in the thoracic spine or middle back. When this curve is increased, the person may have a rounded upper back appearance, hence the terms round back and/or hunch back..