They were probably responsible for the collapse of the Ghassulian culture in Palestine around 3300 BC .
This may have forced Proto - Semitic speakers to emigrate en masse through the Nile Delta to Western Asia .
speakers were probably responsible for the collapse of the Ghassulian culture in Palestine around 3300 BC .
This may have forced Proto - Semitic speakers to emigrate en masse through the Nile Delta to Western Asia .