LONDON — Germany said on Thursday that it would cancel a contract with Verizon Communications, part of the fallout from continuing revelations by Edward J. Snowden, a former National Security Agency contractor, who says that American intelligence agencies had routine access to global data provided by telecom companies.

Mr. Snowden’s accusations have had particular impact in Germany, where the personal cellphone of Chancellor Angela Merkel reportedly was tapped by United States intelligence agencies.

Telecom providers in the United States like Verizon and Internet giants like Google have been fighting to show that they did not actively participate in the clandestine activities.

But as anger on the Continent has grown, the region’s own cellphone carriers, like Deutsche Telekom, have been promoting their European roots — and the fact that they comply with Europe’s stringent data protection rules — to win business from American competitors.