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How did france social divisions on the late 1700s contribute to the french revolution

Why did poland, hungary, and east germany join the warsaw pact? a)their people voted to join in free elections. b)their efforts to join nato failed. c)they wanted to stop the spread of communism in europe. d)they were soviet satellites that had little choice.

The first time that unmanned underwater "gliders" were used by ocean scientists to respond to an oil spill was after the