Complex sentence: Theodore Odrach is largely known as the writer of the Pinsk Marshes, a vast stretch of marshland located in southwestern Belarus and northwestern Ukraine; it is credited as being the largest swamp in Europe.
Split into simpler sentences: Theodore Odrach is largely known as the writer of the Pinsk Marshes, a vast stretch of marshland located in southwestern Belarus and northwestern Ukraine. It is credited as being the largest swamp in Europe.