The Dutch company Margarine Unie(english: Margarine Union Limited) grew in the 1920s through mergers of several margarine companies, among which Centra and Schicht and above all the companies of Antonius Johannes Jurgens and Samuel van den Bergh. It operated until 1930 when it merged with a British company, Lever Brothers, to form the multinational Unilever. Sometimes referred to as the Jazz Age or primarily in North America as the Roaring Twenties. // Events and trends Technology John T. Thompson invents Thompson submachine gun, also known as Tommy gun John Logie Baird invents the first working television system (1925) Charles Lindbergh becomes the first person to fly... Margarine is a generic term used to indicate any of a wide range of butter substitutes. ... Centra is an Irish convenience store that is a brand of Musgrave, the Irish food retailer. ... Antonius Johannes Jurgens (Oss 8 February 1867 - Torquay (UK) 12 March 1945) was one of the main European margarine manufacturers in the early twentieth century. ... Samuel van den Bergh (Oss 6 April 1864 - Nice (France) 4 February 1941) was one of the main European margarine manufacturers in the early 20th century. ... The British manufacturer Lever Brothers was founded in 1885 by William Hesketh Lever (later Lord Leverhulme) and his brother James. ... Unilever is an Anglo-Dutch company which owns many of the worlds consumer product brands in foods, beverages, cleaning agents and personal care products. ...