How is the word degradation used in the passage

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studies show tha in 7.5 billion years from now, the expanding sun will engulf, and destroy, the earth.

the results of roman expansion produced social conflict and civil war. julius caesar gained power and became a dictator but was then assassinated. the reign of augustus began a long period of imperial rule and peace in the roman empire. rome faced the problems of how to maintain peace, law, and order.

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