King Charles was said to be “absolutely furious” with Prince Harry and Meghan Markle over the couple’s recent three-day trip to Nigeria, RadarOnline.com has learned. In a surprising development to come shortly after Harry and Meghan returned from Nigeria earlier this week, a source close to King Charles claimed that both the monarch and Prince William were “absolutely furious” with the former royals. According to author Tom Quinn, Harry and Meghan’s three-day visit to Nigeria over the weekend “confirmed the worst fears” for the Firm because the pair’s trip had “everything you might expect from…