Complex sentence: The office continued after the treaties of 1842 ended the Canton System and established fixed tarrifs and opened trade to four additional treaty ports, but was abloished in 1904 part of the reforms at the end of the dynasty.
Split into simpler sentences: The office continued after the treaties of 1842 ended the Canton System and established fixed tarrifs and opened trade to four additional treaty ports. It was abloished in 1904 part of the reforms at the end of the dynasty.