Simplify the following text for a Grade 16 native English-speaking person.
Original: The Syriac population of northern Mesopotamia ( the Tur Abdin , Hakkari , Van , Siirt regions of present-day southeastern Turkey and the Urmia region of northwestern Iran ) was forcibly relocated and massacred by Ottoman ( Turkish ) and Kurdish forces between 1914 and 1920 under the regime of the Young Turks .
Simplified: The Assyrian population of northern Mesopotamia ( the Tur Abdin , Hakkari , Van , Siirt regions of present-day southeastern Turkey and the Urmia region of northwestern Iran ) was forcibly relocated and massacred by Ottoman ( Turkish ) and Kurdish forces between 1914 and 1920 .