Well
he threatened to destroy all of japan lol with atomic bombs
The Ottoman Empire contributed indirectly to the start of World War I by Balkan calls for independence, which contributed to instability in the region.
It was home of people of many religions (Islam, different Christian sects) and many ethnic groups (Serbs, Albanians, Croats). Some people identified as members of those groups, but slowly, sometimes a more unified "Yugoslav" identity was emerging - but not everywhere.
