1878 Greek Macedonian rebellion – Wikipedia

The 1878 Greek Macedonian rebellion, also known as the Macedonian Revolution of 1878, was launched in opposition to the Treaty of San Stefano, according to which the bulk of Macedonia would be annexed to Bulgaria, and in favour of the union of Macedonia with the Kingdom of Greece.This followed the brief Greco-Turkish war of 1878 in which Greece had declared war on 2 February against the …

https://en.wikipedia.org/wiki/1878_Greek_Macedonian_rebellion