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London's benchmark FTSE 100 index rose 0.23 percent to 6,684.32 points, while in Paris the CAC 40 was up 0.34 percent at 5,063.47 points.
In Germany, Frankfurt's DAX 30 rose 0.13 percent to 11,271.31.
The US Commerce Department on Thursday said the world's top economy expanded at an annual rate of 2.3 percent in the April-June period, the strongest rate since the third quarter of 2014.