Germany's DAX 30 index closed up 343.44 points, or 1.47%, at 23,690.39 on Thursday, September 18.
The UK's FTSE 100 index closed up 17.53 points, or 0.19%, at 9,225.90 on Thursday, September 18.
France's CAC 40 index closed up 67.63 points, or 0.87%, at 7,854.61 on Thursday, September 18.
The STOXX 50 index closed up 91.65 points, or 1.71%, at 5,461.35 on Thursday, September 18.
The Spanish IBEX 35 index rose 35.03 points, or 0.23%, to 15,175.03 on Thursday, September 18.
The Italian FTSE MIB index rose 361.02 points, or 0.86%, to 42,316.00 on Thursday, September 18.