Rise and of the Hellenistic empire started when Alexander the great came in lead and when he died it was the fall. cause he was the leader
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I'm taking a stab at it and say the last one. sorry if I'm wrong! XD
The president. The president is the chief executive of the U.S. government. Glad I could help :)
I think its because of power or it commands more of respect or it was for decoration for the helmet. i hope this helps you.