Complex sentence: Transnistria was govern by Moldova Principality in XVII century, but was never a part of it.Today west part of Transnistria is in Republic of Moldavia while the rest is in Ukraine, also most of Bugeac, north of Bucovina and Pocutia is in Ukraine.
Split into simpler sentences: Transnistria was govern by Moldova Principality in the 17th century, but was never a part of it. Today the west part of Transnistria is in Republic of Moldavia while the rest is in Ukraine, also most of Bugeac, north of Bucovina and Pocutia is in Ukraine.