Federal system countries include Argentina, Australia, Austria, Belgium, Bosnia and Herzegovina, Brazil, Canada, Comoros, Ethiopia, Germany, India, Iraq, Malaysia, Mexico, Pakistan, Russia, Saint Kiss and Nevis, Sudan, Switzerland, United Arab Emirates, United States,
The Aksum Empire was the result of two world hubs sharing their collective learning about agriculture, and rose to become a great power in the ancient world because it formed a crucial link between East and West on the supercontinent of Afro-Eurasia.
