The journey to Mecca each Muslim is expected to take is called the Hajj, which is Arabic for pilgrimage. Hope this helped :)
Answer:
There was royalty with kings and queens ruling over the masses. There was also the working class and the upper class. The upper class will be the individuals that were allowed to live on top of the hills because of their social and economic status
Explanation:
The Doppler Effect. When a train is approaching, the sound waves in front of it are "squished" and the sound of a train whistle will seem to be a higher pitch than the actual pitch of the whistle. If the train is departing, the sound waves will appear to be "stretched" and the sound will be lower than the actual pitch of the whistle. As the train passes by, the sound will shift from the higher pitch to the lower pitch, passing its true sound on the way.
Hope this helps! :)
