European stock markets have dropped sharply, wiping out gains from the day before, amid fears that the eurozone debt crisis is resurfacing. European stock markets ended lower on Tuesday, with the Spanish stock market the worst hit, as the IBEX 35 index shed 2.7 percent, AFP reported. In Milan, FTSE MIB index also traded over two percent lower and Frankfurt’s DAX and Paris’ CAC 40 slumped 1.05...