U.S. and Saudi  Arabian companies signed business deals worth tens of billions of  dollars on Saturday during a visit by U.S. President Donald Trump, as  Riyadh seeks help to develop its economy beyond oil. National oil firm Saudi Aramco said it signed $50 billion of agreements with U.S. firms. Energy minister Khalid al-Falih said deals involving all companies totaled over $200 billion, many of them designed to produce things in Saudi Arabia that had previously been imported.