India, May 19 -- European stocks traded lower on Monday as investors reacted to Moody's downgrade of U.S. credit rating and mixed economic data from China.

The British pound rallied after the U.K. reached an agreement with the European Union to reset relations.

"There is an agreement ... on the different texts and parallel aspects of the EU-UK Summit," one EU diplomat reportedly said.

The pan European STOXX 600 dropped 0.6 percent to 545.82 after rising 0.4 percent on Friday.

The German DAX slipped 0.3 percent, while France's CAC 40 and the U.K.'s FTSE 100 both were down around 0.6 percent.

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