Belgium was heavily involved in the early development of railway transport. Belgium was the second country in Europe, after Great Britain, to open a railway and produce locomotives. The first line, between the cities of Brussels and Mechelen opened in 1835. Belgium was the first state in Europe to create a national railway network and the first to possess a nationalised railway system. The network expanded fast as Belgium industrialised, and by the early 20th century was increasingly under state-control. The nationalised railways, under the umbrella organisation National Railway Company of Belgium (NMBS/SNCB), retained their monopoly until liberalisation in the 2000s.