According to david orenstein, which two things are the foundation for social life?

a. social networks and groups
b. groups and individual activities
c. groups and group activities
d. leaders and group activities

Which groups of people most directly benefited from song innovations in the song dynasty‘s open border policy?

The were so closely connected to the tang dynasty that korean elites used chinese as their written language. they set up a statewide academy that trained government officials in the philosophy of .

How did economics delay scientists' first attempts for conservation in each story? describe the political actions that led to successful conservation in both stories. i have them all done but these two. none of my teachers are responding and i just need . i can show both stories.