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Newton, city, seat (1846) of Jasper county, central Iowa, U.S., about 30 miles (50 km) east of Des Moines. It was settled in 1846 as the county seat and was named for John Newton, a soldier of the American Revolution. The railroad arrived in the 1860s and the community developed as a lumber-milling and agricultural trading centre. In 1898 the washing machine industry began there with the manufacture of ratchet-slat washers. Newton was where Frederick...