Answer
Northern Dobruja was the region that Kogălniceanu played a role in colonising for Romania. This was a region that had been previously part of the Ottoman Empire, but was annexed by Romania in 1878. Kogălniceanu was a Romanian politician and diplomat who played a key role in the negotiations that led to the annexation of Northern Dobruja. He also played a role in the colonisation of the region by Romanians.