context: The Knowledge Publishing House was established in 1988, and soon it established itself as a prominent one of the most famous avant-garde publishing houses in the Kingdom of Morocco and since its inception, the House has endeavored to focus on the scientific and intellectual level aimed at its publications, to serve in the first class Our Arab-Islamic civilization heritage, then covering all branches of human studies.
question: When was the Knowledge Publishing House established?
answers.text: 1988