An elaborate state funeral is Britain’s final tribute to Queen Elizabeth II, featuring a service at the 13th century Westminster Abbey, where her coronation took place almost 70 years ago, and a procession led by King Charles III through the crowd-lined streets of central London. Almost 2,000 guests are attending — among them more than 90 world leaders, representatives from dozens of royal families and members of the House of Windsor, including the queen’s great grandchildren George and Charlotte.