context: Topelius was a student at the Oulu trivial school from 1829 to 1832 and wrote as a high school student in Helsinki as a private student of J.L. Runeberg in 1833. He then began his studies at the University of Helsinki where he was promoted to master's in 1840 and doctorate in 1847. [2] In 1841 Topelius became a journalist for Helsingfors Tidningar and its circulation soon began to increase. Topelius was the editor of the magazine until 1860. In 1854 he was appointed as an additional personal professor of Finnish history at the University of Helsinki, in 1863 he became a professor of Finnish, Russian and Nordic history, and in 1876 he was a professor of general history until 1878. From 1875 to 1878, Topelius was also the rector of the university. [1] In 1870, he was the founder of Maj Föreningen, Finland's first animal welfare association, whose main conservation area was small birds. [3]
question: When will Zachris Topelius become Rector of the University of Helsinki?
answers.text: 1875