Original sentence: At their greatest northwestward expansion, the Ottoman Turks also held power in the area.Later, the region became a possession of the Austrian and Austro-Hungarian Empires, before being incorporated into Romania at the end of World War I.The region now known as Transylvania, was once part of Dacia and became part of the Roman Empire; later the Great Migrations out of Asia brought successive waves of peoples.The union of the regions of Transylvania, Maramureş, Crişana and Banat with the Old Kingdom of Romania was ratified in 1920 by the Treaty of Trianon which recognised the sovereignty of Romania over these regions and settled the border between the independent Republic of Hungary and the Kingdom of Romania.This has abated, but not disappeared, since the Revolution of 1989 restored democracy in Romania
Edited sentence: Later the the Ottoman Turks also held power in the area at their greatest northwestward expansion.Later, the region became part of the Austrian and Austro-Hungarian Empires and the Kingdom of Hungary, before being incorporated into Romania at the end of World War I.The region now known as Transylvania was once part of Dacia and became part of the Roman Empire; later, the Great Migrations out of Asia brought successive waves of peoples and significantly altered the ethnic composition and balance of power in Transylvania.The union of the regions of Transylvania, Maramureş, Crişana and Banat with the Old Kingdom of Romania was ratified in 1920 by the Treaty of Trianon which declared the sovereignty of Romania over these regions and settled the border between the independent Republic of Hungary and the Kingdom of Romania.This has abated somewhat, but not disappeared, since the Revolution of 1989 restored democracy in Romania