TOKYO  -Japan’s Nikkei share average rose to its highest level since July 1990 on Monday, buoyed by optimism over a U.S. debt ceiling deal and a weaker yen. The Nikkei jumped as high as 31,529.23 early in the session, before last trading up 1.9 percent at 31,494.06. The yen weakened to the cusp of 141 … Continue reading Japan’s Nikkei share average rises to highest since July 1990