The European Union and Japan comprise nearly one-third of GDP worldwide and announced on Tuesday that the two had signed a trade deal to establish an open-trade zone for more than 600 million people, according to National Public Radio. The deal had been in the works for more than five years but the two parties reached an agreement in principle a year ago after United States President Donald Trump pulled the U.S. out of the Trans-Pacific Partnership deal that linked Japan and 10 other countries.