Main idea and supporting details

How does the event and i know why the caged bird sings most influence maya angelou’s later poem the caged bird?

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

The controlled use of fire by hominids: (a) limited the expansion of hominids into certain environments, such as dry grasslands. (b) decreased the amount of food energy available in the hominid diet. (c) contributed to geographical expansion and food production techniques in positive ways. (d) has been shown to contribute little to the digestive process of hominids.