A causative form, in linguistics, (a) is an expression of an agent causing or forcing a patient to perform an action or to be in a certain condition--salient cause, (b) is an expression of a patient involved in a non-volitional event that registers the changes of its state--salient effect, (c) is an expression of a grammatical modality in perfective (sequential) or subjenctive (hypothetical) or realis (non-hypothetical) state--perceptual salient. All languages have ways to express causation, but… (More on Causative)