RFFSA
The Rede Ferroviária Federal, Sociedade Anônima (RFFSA, pronounced as Refesa) (lit. 'Federal Railroad Network, S.A.') was the State-owned national railway company of Brazil created from Brazilian Federal Law #3.115 on March 16, 1957, after several railroads were nationalized by the Brazilian government. However, the railroad did not take full effect until September 30, 1957.