A primary source offers a firsthand account of an event.
Wheel
Writing
Calendar
legal code and number system
Answer: A: psychoanalysis
Explanation: just took the test on edge 2020
Advantages:
Natural barriers
Powerful empire
Protection from enemies
Resources
Disadvantages:
Living in tall mountain range
Elevation sickness
Traveling is dangerous
2008 and 20012 were presidential election voter years.
