 Complete the following phrase:  In 1873 he graduated from the mutual school in his hometown, but due to the health problems his father had, he had to work in his fathers shop. In the autumn of 1874 he entered the 3rd high school class of the Aprilov High School in Gabrovo, but in 1876 due to a riot that he participated in, he was expelled from the high school and returned to Sopot. Sopot did not revolt during the 