The emergence of Brazil as a major economic force and its need to improve infrastructure is proving a magnet for investment. Patrick Smith reports. Brazil is now the sixth biggest economy in the world according to its Finance Minister Guido Mantega. The largest country in South America with a population of 190 million and one of the BRICS, (Brazil, Russia, India, China, South Africa, Brazil’s economy grew 2.7% in 2011 and is now worth $2.5 trillion, having overtaken the UK. With big oil and gas reserves sti