Answer:
Siding with Germany in World War I may have been the most significant reason for the Ottoman Empire's demise. Before the war, the Ottoman Empire had signed a secret treaty with Germany, which turned out to be a very bad choice. ... Instead, he argues, World War I triggered the empire's disintegration.
Unauthorized nuclear weapons,
The answer is Berlin air lift
It has made security is stricter in many places but mainly in airports they started checking bags more often and searched bodies in a thoroughly manner.
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