Answer:
Political borders were decided by European powers without consideration of the political and historic connections in the region.
Step-by-step explanation:
After the fall of the Ottoman Empire, a power vacuum was created in South West Asia.
This power vacuum attract many empires within the region which previously have to live under the Ottoman's shadow. They wanted to rise up and took the territories that previously under the ottoman's control.
Since none of the empire was particularly stronger over the other, Ottoman's past conquests were separated into smaller chunks which controlled by different empires.
After the hostile takeover, many of the new conquerors forced the past ottoman citizens to conform to the new traditions and religion and abandon the old ones. Which is why political and historic connections in the past ottoman's region gradually forgotten over time.