USA 27 July 2024: The oldest person in the United States turned 115 earlier this week, and she has offered a single tip on how to live a long, happy life. Elizabeth Francis, who currently lives in Houston, has lived through everything from World War I to the sinking of the Titanic. She turned 115 on Thursday and now holds the distinction of being the oldest living American. She also cemented her place as the world’s fourth-oldest living person