How did Gorbachev's Glasnost and Perestroika impact the sovereignty of Eastern European satellite states?

It left he nations with the choice to declare their independence.

Explanation:

Most of the nations of the eastern region had declared their independence from the mother state of USSR and its communist regimes right after the fall of the USSR.

This was done when they got the free choice to do so if they pleased and the majority of the states had simply opted out.

There was a sense of dissatisfaction among the people with that mode of governance and they had seen the developed of the Democratic countries and wanted it for them.

The states had thus chosen for democracy

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