Before the World War One. there were many secret alliances. but there were also reciprocated suspicions among some European powers during a few former decades (since 1876). These were alliances and suspicions involving their plans for geopolitical recomposition of the Balkans. https://www.jmannino.com/quick-save-Canon-imageCLASS-MF227dw-Monochrome-Multifunction-Laser-Printer-great-choice/