In which of the following countries have many railway lines been closed down as a result of a decline in their competitiveness?

Australia is one of the countries where many railway lines have been closed down due to a decline in their competitiveness. This is because the country has a vast and sparsely populated landmass, which makes it expensive to maintain railway lines that don't generate enough revenue. As a result, many railway lines have become unprofitable and have been closed down over the years. Additionally, the rise of road transport and the deregulation of the trucking industry in the 1980s and 1990s have made it even more challenging for railways to compete.