Complex sentence: Hamilton City, New Zealand is the largest population center for the Waikato Iwi people; however the township Ngaruawahia is also important historically and for the National Marae, Turangawaewae.
Split into simpler sentences: Hamilton City, New Zealand is the largest population center for the Waikato iwi people. However, the township Ngaruawahia is also important historically, and is the site of the National Marae, Turangawaewae.