Original sentence: At that time, however, the Turkish nationalists, led by Mustafa Kemal Ataturk, overthrew the Ottoman government, declared the creation of the Republic of Turkey, while organising the Turkish independence war against the Greek troops ending with Greek defeat.Hundreds of Greeks were forced to leave Smyrna.Many quarters of the city of Smyrna/Izmir was set ablaze.Then, after the Treaty of Lausanne, Greeks of Turkey left for mainland Greece in an exchange with Turks living in mainland Greece
Edited sentence: At that time, however, the Turkish nationalists, led by Mustafa Kemal Ataturk, overthrew the Ottoman government, declared the creation of the Republic of Turkey, while  organising a military assault on the Greek troops ending with Greek defeat.Hundreds of Greeks were forced to leave Smyrna so as to avoid death by Nouredin Pasha.The Greek and Armenian quarters of the city of Smyrna/Izmir was set ablaze by advancing Turkish nationalist forces and thousands died, mainly Christian Greeks and Armenians.Then, after the Treaty of Lausanne, over one million Greeks left Asia Minor for mainland Greece in an exchange with tens of thousands of Turks living in mainland Greece