Former President Donald J. Trump has returned to X (formerly Twitter) with a string of posts made just after noon on Monday. The 2024 Republican presidential nominee had largely been absent from the social platform since the then-sitting President’s account was suspended on January 8, 2021, by the company’s former ownership under Jack Dorsey.Since his suspension over three years ago, the former Republican President founded his own social media company, Truth Social, which went public earlier this year—earning Trump billions. Over the past two years, an exclusivity agreement with Truth Social had largely kept Trump from other social media platforms....