Complex sentence: With Jeff Jarrett out as minority investor of TNA Wrestling, he debuted the branding of Global Force Wrestling in April 2014 and began promoting the brand and establishing international partnerships with wrestling promotions across the world.
Split into simpler sentences: With Jeff Jarrett out as minority investor of TNA Wrestling, he debuted the branding of Global Force Wrestling in April 2014. Since that time, he had been promoting the brand and establishing international partnerships with wrestling promotions across the world.