Short answers, pulled from the story.
The Treaty of Craiova was a 1940 territorial settlement between Romania and Bulgaria that returned Southern Dobruja to Bulgaria. Formal negotiations began on the 19th of August 1940 in the city of Craiova, and Prime Minister Ion Antonescu ratified the treaty on the 13th of September 1940.
Romania agreed to cede all of Southern Dobruja after facing threats of Italian-German arbitration on the 29th of August 1940. The Romanian delegation faced intense pressure from Axis powers while seeking benevolence from Germany regarding the Hungarian-Romanian dispute.
Alexandru Cretzianu and Henri-Georges Meitani signed for King Michael I of Romania, while Svetoslav Pomenov and Teokhar Papazoff represented Tsar Boris III of Bulgaria. These officials formalized the agreement that restored the 1912 border between the two nations.
One hundred three thousand seven hundred eleven Romanians lived in Southern Dobruja before the exchange and moved north, while sixty-two thousand two hundred seventy-eight Bulgarians resided in the northern part and moved south. This bilateral treaty involved the displacement of hundreds of thousands of people including Aromanians and Megleno-Romanians.
Dobrujan Germans living primarily in Northern Dobruja under Romanian rule were transferred to Nazi Germany through the Heim ins Reich policy. Their relocation occurred alongside the main population exchange operations and integrated them into the broader German state structure.