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Singapore national flags are displayed on a residential apartment block in Singapore, on Tuesday, Aug. 4, 2015. Singapore passes the half-century mark on Aug. 9. Photographer: Bryan van der Beek/Bloomberg via Getty Images

Singapore national flags are displayed on a residential apartment block in Singapore, on Tuesday, Aug. 4, 2015. Singapore passes the half-century mark on Aug. 9. Photographer: Bryan van der Beek/Bloomberg via Getty Images