TikTok started restoring service in the United States on Sunday following President-elect Donald Trump's promise to prevent the short-form video-sharing platform from remaining dark.At a rally held in a sports arena in Washington on the eve of his return to the White House, Trump boasted about his role in saving the popular app, telling the crowd, "As of today, TikTok is back."TikTok went offline Saturday night in the United States, hours before a new federal law banning the popular app on national security grounds was set to take effect.TikTok Inc., owned by Chinese company ByteDance Ltd.,…READ FULL ARTICLE