Complex sentence: A number of land wars were fought here in the second half of the 19th century, when the British invaded the Waikato in July 1863, with the last major battle at Orakau in 1864.
Split into simpler sentences: A number of land wars were fought there in the second half of the 19th century. The British invaded the Waikato in July 1863 and the last major battle was fought at Orakau in 1864.