MODERN MANAGEMENT Historical background of classical management theory Oat the end of the 19th century and the beginning of the 20th century. ogreat changes of science and technology and social economy othe second industrial revolution management based on experience and subjective assumptions without scientific basis. Modern ManageMent Historical background of classical management theory lat the end of the 19th century and the beginning of the 20th century. lgreat changes of science and technology and social economy lthe second industrial revolution lmanagement based on experience and subjective assumptions without scientific basis