The systematic study of human population is called, demography.
Answers:
The Nile, The Congo, and The Niger
Explanation:
i looked it up
Answer:
The patricians
Explanation:
It should be understood that the Roman Republic was founded in 509 B.C.E. just immediately after the last Etruscan king that ruled Rome was overthrown.
Then, the Rome's next government served as a representative democracy in the form of a republic. Prior to that, Rome's wealthiest families, the patricians, held power and only they could hold political or religious offices.
Regular citizens
hope this helps
I believe it's #1 but you might want to Google it to be 100% sure ☺️