 Complete the following phrase:  In 1870, he was appointed deputy of the Sabac lower grammar school. And after passing the professors exam in 1873, he continued his educational work in Šabac. He greatly influenced the scientific orientations of his student from the Sabac high school - the future scientist and academician Jovan Cvijić. Karić showed his students the concepts of the future geography textbook in 1879. He returned to Požarevac in 1873, now as a professor of high school geography. In a few years, in 1879, he was transferred again to the Sabac High School. He came to Belgrade with the service in 1881. Since then, he has started publishing geography textbooks. Karić remained as a teacher until 1888 when he was appointed clerk in the Ministry of Education and Church Affairs. In 1879, he wrote a textbook entitled Geography. He soon expanded his textbook by publishing Geography in two volumes. In 1881, he was elected an extraordinary member of the Education Council. In 1882, he published the book Serbian Land, where he described in geological, geographical and statistical terms the territories inhabited by Serbs at that time. Karić wrote political-geographical essays in which he expressed his deep love for his country and its troubles. In 1887, he wrote the voluminous work Serbia in three volumes. This book was a notable exhibit at the 