8. Ang sistema ng pakikipagkalakalan na ginamit ng ating mga ninuno na kung saan ang mga produkto ay ipinapalit sa ibang produkto na dala ng
ibang lahi.
A. Kaingin
B. Barter
C. Pagmimina
D. Pangangayaw
answer me please
correct answers only

explanation:

i think it is in quadrant 4.

the five year plans were part of a command economy. there was little choice in what would be emphasized for the current 5 year period.

the answer to democracy or totalitarianism is a bit harder. in stalin's time, russia was totalitarian. now that's not entirely true. putin has moved towards at least the boundary.

c. asking questions

hope this

the scientific revolution brought us a renewed understanding of humanity and our place in the universe, new scientific equipment, and new laws as a basis for future scientific discovery.