Answer:
The problem facing all humans is the fact that we have unlimited wants but we don't and can never have enough resources to satisfy these wants. This leads us to making choices thus making an opportunity cost. Opportunity cost is the cost of the forgone alternative
Answer:
Algebra
Astrolabe
Hard soap
Windmill
Explanation:
The Islamic Golden Age was a period in the history of Islam where its ideas and cultural movement flourished and which brought about several discoveries that were both scientific, economical, etc.
This Golden Age lasted from the eighth century, until the fourteenth century.
This period began under the reign of Abbasid caliph Harun al-Rashid when he brought scholars to translate classical texts into Arabic.
Some of the inventions which originated during the Islamic Golden Age are astrolabe, hard soap, windmill and algebra.
With more than one ruler the empire would be better suited to protect itself from threats from barbarians and persia
The answer to this is true
