A batch of countries or colonies ruled by emperors, duke or a duchess.
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Answer:
Particular focus on a person's life
Decline of ocean liners and the growth of cruise ships
Answer:
The Doppler radar uses what is known as the Doppler effect. In essence, the frequency of the radar signal increases when precipitation is moving towards the radar and decreases when precipitation is moving away from the radar. This can be vital in predicting tornadoes or gusts of wind.
Explanation:
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