Complex sentence: Governor Grey introduced possums to Kawau in 1868-69, and the first liberation in New Zealand is believed to have been by Captain Howell at Riverton in the South Island in 1837.
Split into simpler sentences: Governor Grey introduced possums to Kawau in 1868-69. The first liberation in New Zealand is believed to have been by Captain Howell at Riverton in the South Island in 1837.