For a long time the Balkans were under the strict influence of the Ottoman Empire, but in the 19th century the Russian Empire began to poke its long nose there, because it was one of its strategic interests at that time. And the pretext for the military conflict was that people lived there from time immemorial, that they preach the Christian faith and Russia must protect them from the yoke. In addition, the Balkan countries themselves fought with the Ottoman Empire and defended their own independence. Also, England and France participated in the Balkan crisis, who were not opposed to replenishing their territories with new lands.
One of the components of a person's success in our time is receiving modern high-quality education, mastering the knowledge, skills and abilities necessary for life in society. A person today needs to study almost all his life, mastering everything new and new, acquiring the necessary professional qualities.