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No one forced Turkey to become a Democracy but the people of Turkey. It's not something you can create from the outside and force on a people. THEY have to decide to either do that,or continue killing and being killed by their neighbors.
Mustafa Ataturk forced the people of Turkey to secularize. He banned beards and ordered the Turkish military and police to forcibly shave offenders in public squares. He even granted women the right to vote as far back as the early '30s, before some European nations. (admittedly, there really wasn't much choice at the ballot box - see below)
He, however, didn't make Turkey a democracy. It had the trappings, but it was a single-party state... *HIS* party.
It wasn't until his death in 1938 that there was a power transfer.
Yet even then, the Turkish military would overthrow the civilian government at the merest hint that the civilian government was not sufficiently secular.
It wasn't until Erdoğan (the current leader) that the Turkish military stopped removing the civilian governments.