The Deadly Trio

The Deadly Trio is an alliance consisting of three superpowers: Buvoria, Ottoman Empire and Polish-Lithuanian Empire. It was considered a dangerous threat to most other nations, and was the fuse of WWIII.

Origin
The Deadly Trio was officially formed in the 22nd Century, when Bulgarian Empire, which would become Buvoria soon, invited Polish-Lithuanian Commonwealth, which would become Polish-Lithuanian Empire, to join Bulgarian Empire and Ottoman Empire's alliance. PLC accepted, thus this alliance was created.

WWIII
TDT played a major role in WWIII, and was responsible for around 70% of war casulties. The three countries steamrolled other smaller countries and even Central Europe Federation. However, its doom was met as all three countries in the aliance surrender to The New Grand Alliance, concluding WWIII.