The term 'style of wrestling' can refer to two different types of wrestling: SUMO and Catch-as-Catch-Can. SUMO is a Japanese style of wrestling that has been practiced since the Edo period, and is considered a national sport in Japan. It is characterized by two wrestlers attempting to force each other out of a circular ring or into submission. Catch-as-Catch-Can is an English style of wrestling that originated in Lancashire, England in the 19th century. It is a form of grappling that allows for a wide range of holds, locks, and throws.