Britain said farewell to Queen Elizabeth II on Monday at a state funeral attended by world leaders, before a historic last ceremonial journey through the streets of London packed with sorrowful mourners. Huge crowds gathered in near silence to watch as the queen’s flag-draped coffin, topped with the Imperial State Crown, her orb and sceptre, was carried slowly to a gun carriage from parliament’s Westminster Hall where it had lain in state since Wednesday. To the tune of pipes and drums, the gun carriage – used at every state funeral since Queen Victoria’s in 1901 – was then drawn by 142 junior…